General proceedings : 28th International Geological Congress, Washington, D.C. USA July 9-19, 1989
Prepared by Bruce B. Hanshaw Secretary-General, 28th IGC
Bok Engelsk 1990 International Geological Congress,· Konferanser
Utgitt | Reston , 1990
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Omfang | vi, 101 s.
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Emner | |
Sjanger |