TY  - BOOK
AU  - Chao,E.C.T.
ED  - United States
TI  - Comparison of the Cretaceous-Tertiary boundary impact events and the 0.77-Ma Australasian tektite event: relevance to mass extinction 
U1  - 551.77 20th ed.
PY  - 1993///].
CY  - [Washington]: 
PB  - [United States Government Printing Office], 
KW  - Cretaceous-Tertiary boundary
KW  - Tektite
KW  - Extinction (Biology)
N1  - Includes bibliographical references (p. 19-22)
N2  - Reinterpretation of iridium anomalies, shocked quartz, and microtektites attributed to cratering events in Cretaceous-Tertiary boundary sections. Evidence from the Ries crater of Germany and Australasian tektites is  essential to understanding giant craters and mass extinction
ER  -