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Proceedings of symposium on drilling technology and engineering aids to geoogical exploration calcutta 12th to 15th february 1980 Special publication No.4
| Hlavní autor: | |
|---|---|
| Médium: | Printed Book |
| Jazyk: | English |
| Vydáno: |
Newdelhi
Geological Survey of India
1980
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| Žádný popis. |