Definition of Wisconsinan Stage / 
By John C. Frye ... [et al.]. 
 -- Washington :   United States Government Printing Office,   1968 
 - 22 p. -- 
 (Geological Survey Bulletin  ;  1274-E).
<br/><br/> Fecha real de registro 20-03-1969 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Estratigrafía - Wisconsin
<br/><br/><label>Universal Decimal Class. No.: </label>551.7(775)