TY  - BOOK
AU  - Hyman, Libbie Henrietta
TI  - Invertebrates
PY  - 1951///
CY  - New York: 
PB  - McGraw-Hill Book Company, Inc., 
KW  - Science
N1  - Vol. 2 (Platyhelminthes and rhynchocoela: the acoelomate bilateria); vii, 549p.
Vol. 3 (Acanthocephala, aschel minthes, and entoprocta:  the pseudocoelomate bilateria); vii, 572p
ER  -