Lead-Alpha ages of the Mesozoic batholiths of western north America / 
by Esper S. Larsen...[et al.]. 
 -- Washington :   United States Government Printing Office,   1958 
 - P. 35-62. -- 
 (Geological Survey Bulletin  ;  1070-B).
<br/><br/><label>Subjects--Topical Terms: </label><br/>América del Norte<br/>Petrografía
<br/><br/><label>Universal Decimal Class. No.: </label>552(7)