TY  - BOOK
AU  - Weichert, Charles K
TI  - Elements of Chordates Anatomy
U1  - 560 
PY  - 1953///
CY  - New York
PB  - Mcgraw-Hill Book Company
KW  - General Stack
KW  - Paleontology; paleozoology
KW  - Chordates
KW  - Zoology
ER  -