TY  - BOOK
AU  - Hyman, Libbie Henrietta .
TI  - The Invertebrates: Echinodermata
U1  - 592 
PY  - 1955///
CY  - New York
PB  - McGraw - Hill book company
KW  - Zoology
KW  - Invertebrates-Echinodermata
KW  - G-Zoology
N1  - Index
ER  -