TY  - BOOK
AU  - Hyman Libbie Henrietta
TI  - Invertebrates: protozoa through ctenophora
U1  - 592 
PY  - 1940///
CY  - London
PB  - McGraw-Hill Book
KW  - Invertebrates
N1  - v.2- Platyhelminthes and phynchocoela, the acoelomate bilateria. v.3- Acanthocephala, aschelminthes, and entoprocta, the pseudocoelomate bilateria. v.4- Echinodermata, the coelomate bilateria. v.5- Smaller coelomate groups, chaetognatha, hemichordata, po
ER  -