Gilbert, M. S. (Margaret Shea),  1908- <br/><br/>
Biography of the unborn 

 - New rev. ed. 
 - New York :  Hafner,  1963 
 - 160 p. :  ill. ;  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Embryology, Human