Gumilev, L. N.  1912-1992. <br/><br/>
Ethnogenesis and the biosphere / 
Leo Gumilėv. 
 - Moscow :  Progress Publishers,  c1990. 
 - 381 p. :  ill. ;  21 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/>
<br/><br/><label>ISBN: </label>5010020106 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ethnic groups.<br/>Ethnicity.<br/>Human population genetics.
<br/><br/><label>Dewey Class. No.: </label>305.8  / GUE