工程与技术A code of safety standards for the construction, operation and maintenance of elevators, dumbwaiters & escalatorsAmerican Society of Mechanical Engineers![A code of safety standards for the construction, operation and maintenance of elevators, dumbwaiters & escalators]()
A code of safety standards for the construction, operation and maintenance of elevators, dumbwaiters & escalators
American Society of Mechanical Engineers
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《A code of safety standards for the construction, operation and maintenance of elevators, dumbwaiters & escalators》，American Society of Mechanical…
书目信息
- 作者
- American Society of Mechanical Engineers
- 分类
- 工程与技术
- 语言
- 英语
- 来源
- HathiTrust