LEADER 00000nam 2200241 a 4500 001 0935309 007 t 008 001408 1 1990 000 eng 020 0813722470 040 BLAISE 050 4 QE 1 G35 S7(247) 245 00 Global catastrophes in earth history :|ban interdisciplinary conference on impacts, volcanism, and mass mortality /|cedited by V.L. Sharpton, P.D. Ward. 260 Boulder :|bGeological Society of America,|c1990. 300 631p. 440 0 Special papers (Geological Society of America) ;|v247 700 1 Sharpton, Virgil L. 700 1 Ward, Peter D. 946 6XX absent
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