Welsh, John H. <br/><br/>
Laboratory exercises in invertebrate physiology 
by John H.Welsh, Ralph I.Smith and Ann E. Krammer 
 - 3th ed. 
 - Minnesota  Burgess  1968 
 - x, 219p.;   28cm. 
<br/><br/><label>Dewey Class. No.: </label>592.01  / WEL