Rugh, Roberts <br/><br/>
Frog: Its reproduction and development 

 - McGraw-Hill book Co, Inc, NewYork  1951 
 - 336 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Amphibians-- Frogs
<br/><br/><label>Dewey Class. No.: </label>597.8  RUG-F