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كتب علوم طبيعية

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• Studies in the evolution of animalsE. Bonavia
• Colour in nature; a study in biologyMarion I. Newbigin
• Neighbours of field, wood, and stream; : or, Through the year with nature's childrenMorton Grinnell
• How animals talk, and other pleasant studies of birds and beast, by William J. Long ... Illustrations and decorations by Charles CopelandWilliam J. Long
• A synopsis of the general morphology of animalsEdwin Grant Conklin
• A course in invertebrate zoölogy : a guide to the dissection and comparative study of invertebrate animalsHenry Sherring Pratt
• The basal connections of the tracheae of the wings of insectsRoyal N. Chapman
• Evolution of mammalian molar teeth to and from the triangular type including collected and revised researches trituberculy and new sections Henry Fairfield Osborn
• ...A consideration of certain bulbar, midbrain, and cerebellar centers and fiber tracts in birdsEsther Blick Sanders
• Fundamentals of keratinization; a symposium presented at the New York meeting of the American Association for the Advancement of Science, DeEarl O. Butcher
• Embryology of the viviparous insectsHarold Raymond Hagan
• Agriculture in the United StatesUnited States. Department of Agriculture
• Missouri River Basin agricultural programUnited States. Department of Agriculture
• Century of service: the first 100 years of the United States Department of Agriculture. [by Gladys L. Baker, and othersUnited States. Dept. of Agriculture. Agricultural History Branch
• Historical sketch of the U. S. Department of Agriculture; its objects and present organizationCharles H. Greathouse
• The United States Department of agriculture, a study in administrationWilliam Lawrence Wanlass
• Personnel administration development in the United States Department of Agriculture : the first fifty yearsW. W Stockberger
• Reorganization of the Department of AgricultureUnited States. Congress. Senate. Committee on Government Operations
• A study committee report on Federal aid to agriculture, submitted to the Commission on Intergovernmental RelationsUnited States. Commission on Intergovernmental relations. Study Committee on Federal Aid to Agriculture
• Agricultural functions and organization in the United States; a report with recommendations, prepared for the Commission on Organization of United States. Commission on Organization of the Executive Branch of the Government. Committee on Agricultural Activities
• Hearings before the Committee on Agriculture during the second session of the Sixty-first CongressUnited States. Congress. House. Committee on Agriculture
• Hearings before the Committee on agricultureUnited States. Congress. House. Committee on Agriculture
• Foreign field service. Department of agricultureUnited States. Congress. Senate. Committee on Agriculture and Forestry
• A survey of duties, functions and administration of state departments of agriculture and related agenciesMississippi. Department of Agriculture and Commerce
• New Jersey's Agricultural Experiment Station, 1880-1930Carl Raymond Woodward
• Communications to the Board of agriculture, on subjects relative to the husbandry and internal improvement of the countryFisheries and Food Great Britain. Ministry of Agriculture
• Final report of Her Majesty's commissioners appointed to inquire into the subject of agricultural depressionGreat Britain. Royal Commission on Agriculture
• General view of the agriculture of the county of GloucesterGreat Britain. Board of Agriculture
• Rehabilitation and development of agriculture, forestry, and fisheries in South Korea; report prepared for the United Nations Korean ReconstFood and Agriculture Organization of the United Nations
• Documentary material on the Inter-American conference on agriculture, forestry and animal industryD.C.) Inter-American Conference on Agriculture 1930 : Washington
• Final act of the Inter-American conference on agricultureD.C.) Inter-American Conference on Agriculture 1930 : Washington
• Report of the delegates of the United States of America to the Inter-American conference on agriculture held at Washington, D.C., September Washington United States. Delegation to the Inter-American conference on agriculture. 1st
• European agriculture and rural economy. From personal observation.Henry Colman
• Plain and pleasant talk about fruits, flowers and farmingHenry Ward Beecher
• Hints on agricultural subjects, and on the best means of improving the condition of the labouring classesJ. C. Curwen
• The farmer's dictionary : a vocabulary of the technical terms recently introduced into agriculture and horticulture from various sciences, aD. P. d. 1853 Gardner
• Prairie farming in America. With notes by the way on Canada and the United States.James Caird
• Improvements in agriculture, arts, &c. of the United StatesHenry Leavitt Ellsworth
• How to get a farm, and where to find oneEdmund Morris
• The story of agriculture in the United StatesAlbert Hart Sanford
• Valley of tomorrow; the TVA and agricultureNorman I Wengert
• Iowa agriculture: an historical surveyEarle Dudley Ross
• Maine agricultural statistics; resources and opportunities, with illustrations. Issued by Maine Department of agriculture, A. W. Gilman, comMaine. Dept. of Agriculture
• Agriculture in ante-bellum MississippiJohn Hebron Moore
• The development of agriculture in New Jersey, 1640-1880Carl Raymond Woodward
• Agriculture of New-York : comprising an account of the classification, composition and distribution of the soils and rocks; and the natural Ebenezer Emmons
• Pennsylvania agriculture and country lifeS. W. Fletcher
• Some types of irrigation farming in UtahEdgar Bernard Brossard
• Agriculture and food production in and around NorfolkNorfolk. Industrial commission
• On the depressed state of agricultureJames Cleghorn
• The pioneers and progress of English farmingRowland E. Baron Ernle Prothero
• English farming, past and presentRowland E. Baron Ernle Prothero
• A survey of Soviet Russian agricultureLazar Volin
• Agricultural instructions for those who may emigrate to BrazilNicolau Joaquim Moreira
• The agricultural development of ColombiaWorld Bank
• Agriculture in Taiwan (Formosa)United States. Office of the Chief of Naval Operations
• Agricultural progress in HaitiService coopératif inter-américain de production agricole. Haiti
• Hawaii's crop parade; a review of useful products derived from the soil in the Hawaiian Islands, past and presentDavid Livingston Crawford
• Cobras, cows and courage : farm life in north IndiaJean Bothwell
• Observations on Indian agricultureGwynn Garnett