TY  - BOOK
AU  - Williams G E Ed.
TI  - Megacycles: Long term episodicity in Earth and planetary history
T2  - Benchmark papers in geology; 57
U1  - H4z7, M1 
PY  - 1981///
CY  - Stroudsburg
PB  - Hutchinson ross        
KW  -  Dynamic geology
KW  - Geology
ER  -