Ballard, William W. <br/><br/>
Comparative anatomy and embryology / 
William W. Ballard 
 - New York :  Ronald Press Company,  1964 
 - viii, 618 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>LCCN: </label>64-13945 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Anatomy, Comparative<br/>Embryology