De Beer, Gavin,  Sir,  1899-1972 <br/><br/>
Embryos and ancestors / 
by Gavin de Beer 
 - Oxford :  Clarendon Press,  1954 
 - xii, 159 p. ;  22 cm. 
 - Monographs on animal biology .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label> pnd 6.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Embryology<br/>Evolution (Biology)