TY  - BOOK
AU  - Palmer,Trevor
TI  - Perilous planet earth: catastrophes and catastrophism through the ages 
SN  - 0521819288
U1  - 551.397 PAL 
PY  - 2003///
CY  - Cambridge, New York
PB  - Cambridge University Press
KW  - Asteroids
KW  - Collisions with Earth
KW  - Catastrophes (Geology)
KW  - Evolution
N1  - Includes bibliographical references and index
ER  -