TY  - BOOK
AU  - Boell, E.J.  .
TI  - Invertebrates: acanthocephala, aschel minthes, and entoprocta the pseudocoelomate bilateria / 
U1  - K1 
PY  - 1951///
CY  - New York : 
PB  - McGraw-Hill Book Company, , 
KW  - Zoology- Invertebrates
ER  -