Safety rules and regulations pertaining to stationary engines, electrical machinery, and their controlled apparatus.
| مؤلف مشترك: | |
|---|---|
| التنسيق: | كتاب |
| اللغة: | English |
| منشور في: |
Manila
Bureau of Print.
1950.
|
| الطبعة: | 2nd ed. |
| الموضوعات: |