Storer, Tracy I.  Usinger, Robert L. <br/><br/>
Elements of zoology / 
by Tracy I. Storer and Robert L. Usinger 
 - 2nd ed. 
 - New York :  Mcgraw Hill Book Company ,  1961 . 
 - 464 p.   Hard Back 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology<br/>Excretory system <br/>Cells<br/>Animals 
<br/><br/><label>Dewey Class. No.: </label>590  / TRA-E