Watterson, Ray L, <br/><br/>
Laboratory studies of chick, pig, and frog embryos / 
by Ray L. Watterson and Robert M. Sweeney. 
 - 3a ed. 
 - 205 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Embriología--Manuales de laboratorio.
<br/><br/><label>Dewey Class. No.: </label>596.033  / W344L 1970