Kerr, Norman S. <br/><br/>
Principles of development/ 
by Norman S. Kerr. 
 - Dubuque, Iowa,  W.C. Brown Co.  1967 
 - ix, 115 p. :  ill. ;  23 cm. 
 - Concepts of biology series. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Embryology.