TY  - BOOK
AU  - Hazel J E
AU  - Kauffman E G
TI  - Concepts and methods of biostratigraphy
U1  - 551.7 
PY  - 1977///
CY  - Strodsburg, Pennsylvania
PB  - Hutchinson and Ross
KW  - Biostratigraphy
KW  - Geology
ER  -