Mayr, Ernst  <br/><br/>
Populations, Species and Evolution   / 
Ernst Mayr 
 - Cambridge, Mass. :   Belknap Press of Harvard University Press,  1970 
 - xv, 453 p. :   ill, map. ;   25 cm. 
<br/><br/><label>ISBN: </label>0674690109 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals -- Variation.<br/>Evolution.<br/>Species.
<br/><br/><label>LC Class. No.: </label>QH371  / .M33 1970