Geologic maps  portraits of the earth 

 - Washington D.C  U.S. Dept. of the Interior, Geological Survey  1982 
 - 19 p.  ill. (some col), col maps  23x10 cm 
<br/><br/> G.P.O. sales statement incorrect in publication.  Shipping list no. 86-669-P 
<br/><br/><label>GPO Item No.: </label>621 
<br/><br/><label>Gov. Doc. Class. No.: </label>