O'Rahilly, Ronan. <br/><br/>
Developmental stages in human embryos   
by Ronan O'Rahilly, Fabiola Mullar 
 - Washington  Carnegie institution of washington  1987 
 - 306p. 
 - Carnegie institution of washington publication  No.637 .
<br/><br/><label>ISBN: </label>0872796663 
<br/><br/><label>Dewey Class. No.: </label>612.64  / N87