TY  - BOOK
AU  - Brett C E Ed & bairdy G C Ed.
TI  - Paleontological events stratigraphic, Ecological and Evolutionary Implications .-0-231-08250-9
SN  - 0-231-08250-9
U1  - H6/N97/B24442 
PB  - Columbia Univ Press, New York, USA
ER  -