TY  - BOOK
AU  - Kauffman Erle G Ed.
AU  -  Hazel Joseph E Ed.
TI  - Concepts and methods of biostratigraphy
U1  - H5:(G), L7 
PY  - 1977///
CY  - Stroudsberg, Dowden Hutchinson and Ross
KW  -  Biostratigraphy
KW  - Geology
ER  -