WILLIAMS, John R. <br/><br/>
Ground water in the permafrost regions of Alaska / 
by John R. Williams. 
 -- Washington :   United States Government Printing Office,   1970 
 - 83 p. -- 
 (Geological Survey Professional Paper  ; 696).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Alaska<br/>Hidrología
<br/><br/><label>Universal Decimal Class. No.: </label>556(798)