TY  - BOOK
AU  - Hegner,Robert W.
AU  - Engemann,Joseph G.
TI  - Invertebrate zoology
U1  - 592 HEG E  
PY  - 1968///.
CY  - New York : 
PB  - The Macmillan Company, 
KW  - Zoology, Invertebrates
ER  -