Spratt, Nelson T.  1911- <br/><br/>
Developmental biology / 
by Nelson T. Spratt, Jr 
 - Belmont, Ca. :  Wadsworth Publishing Co.,  1971 
 - 553 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographies 
<br/><br/><label>ISBN: </label>053400010X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Developmental biology