TY  - BOOK
AU  - Hyman,Libbie Henrietta
TI  - Invertebrates : Vol. IV: the coelomate bilateria 
U1  - 592 
PY  - 1955///
CY  - New York [etc.]
PB  - McGraw-Hill Book Company
KW  - Equinoderms
KW  - Celomats
N1  - Bibliografia; Index
ER  -