Armstrong, Augustus K.  1930 <br/><br/>
Carbonate facies and the lithostrotionid corals of the Mississippian Kogruk formation, DeLong mountains, Northwestern Alaska / 
by Augustus K. Armstrong. 
 -- Washington :   United States Government Printing Office,   1970 
 - 38 p., [14] h. de lam. -- 
 (Geological Survey Professional Paper  ; 664).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Alaska<br/>Rocas carbonatadas
<br/><br/><label>Universal Decimal Class. No.: </label>552.54(798)