Buchsbaum, Ralph,  1907-2002. <br/><br/>
Animals without backbones :  an introduction to the invertebrates. 
Ralph Buchsbaum, 
 - Chicago :  Univ. of Chicago Press,  [c1938] 
 - 405 p.  ill.  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invertebrates.<br/>Invertebrates.
<br/><br/><label>LC Class. No.: </label>QL362  / .B93 
<br/><br/><label>Dewey Class. No.: </label>592  / BUC 1938 
<br/><br/><label>National Library of Medicine Call No.: </label>QL 362  / B921a 1938