TY - BOOK ED - International Geological Congress (30th:1996:Beijing,China) . TI - Proceedings of the 30th International Geological Congress held at Beijing,China 4-14August,1996 / SN - 9067642487 U1 - 551 PY - 1997/// CY - Utrecht,The Netherlands : PB - VSP , KW - GEOLOGY N1 - NULL ER -