TY  - BOOK
AU  - Berry,William B.N.
TI  - Growth of a prehistoric time scale, based on organic evolution
AV  - QE508 .B53
U1  - 551.7/01 
PY  - 1968///]
CY  - San Francisco
PB  - W. H. Freeman
KW  - Geological time
N1  - Bibliography: p. 147-152
ER  -