TY  - BOOK
AU  - Hegner, Robert W.
AU  - Engemann, Joseph G.
TI  - Invertebrate zoology
AV  - QL362 .H4 1968
U1  - 591 
PY  - 1968///
CY  - New York
PB  - Macmillan
KW  - Invertebrates
KW  - Zoology
N1  - Includes bibliographies and index
ER  -