TY  - BOOK
AU  - Erickson,Jon
TI  - A history of life on earth: understanding our planet's past 
T2  - The changing earth series
SN  - 0816031312
AV  - QE28.3 .E75 1995
PY  - 1995///]
CY  - New York
PB  - Facts on File
KW  - Historical geology
N1  - Includes bibliographical references (pages 230-236) and index
ER  -