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Code of practice for sub surface exploration by pits, trenches, drifts and shafts, IS 4453-1980 /
| Autor corporatiu: | Indian Standards Institution . |
|---|---|
| Format: | Printed Book |
| Idioma: | English |
| Publicat: |
New Delhi :
Indian Standards Institution ,
1980.
|
| Edició: | 1 / |