TY  - BOOK
AU  - Kauffman, Erle G (Ed.)
TI  - Concepts an dmethods of biostratigraphy 
SN  - 0-87933-246-8
PY  - 1977///
CY  - Stroudsburg: 
PB  - Dowden, Hutchingon & Ross, Inc., 
KW  - Science
ER  -