Hagedoorn,Arend L. & Hagedoorn,A.C <br/><br/>
The relative value of the processes causing evolution 

 - The Hague  Martinus Nijhoff  1921 
 - 294p ; 24  cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals
<br/><br/><label>Universal Decimal Class. No.: </label>13  / D14