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Code of practice for sub surface exploration by pits, trenches, drifts and shafts, IS 4453-1980 /
| Соавтор: | |
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| Формат: | Printed Book |
| Язык: | English |
| Опубликовано: |
New Delhi :
Indian Standards Institution ,
1980.
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| Редактирование: | 1 / |
| Объем: | 18 ; . |
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