Watterson, Ray L. <br/><br/>
Laboratory studies of chick and pig embryos / 
Ray L. Watterson  &  Sweeney. 
 - Minneapolis :  Burgess Publishing Company,  c1955. 
 - 205 pages :  Illustrations ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds--Embryology.<br/>Chickens--Embryos.<br/>Embryology--Laboratory manuals.<br/>Mammals--Embryology.<br/>Swine--Embryos.
<br/><br/><label>LC Class. No.: </label>QL957  / .W35 
<br/><br/><label>Dewey Class. No.: </label>591.33*