TY  - BOOK
AU  - Wignall,P.B.
TI  - Worst of times(The): how life on earth survived eighty million years of extinctions 
SN  - 9780691142098
U1  - 94(6) 
PY  - 2015///
CY  - New jersey
PB  - Princeton university press
KW  - MASS EXTINCTIONS
KW  - EXTINCTION
KW  - SURVIVAL
ER  -