TY  - BOOK
AU  - Hyman, Libbie Henrietta
TI  - The invertebrates : 
U1  - 592 HYM  6 
PY  - 1951///.
CY  - New York : 
PB  - McGraw- Hill, 
KW  - Invertebrates
KW  - Morphology
N1  - Includes index
ER  -