TY  - BOOK
AU  - Hyman, Libbie Henriettta.
AU  - Shull, Franklin shull.
TI  - The invertebrates: protozoa through ctenophora
U1  - 592 
PY  - 1940///
CY  - New York
PB  - McGraw-Hill
KW  - Zoology
KW  - Invertebrates
ER  -