Johnson, Ross B.  1919- <br/><br/>
Pecos National Monument New Mexico : its geologic setting / 
By Ross B. Johnson. 
 -- Washington :   United States Government Printing Office,   1969 
 - 11 p. + 1 plan. pleg. -- 
 (Geological Survey Bulletin  ;  1271-E).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología - New Mexico
<br/><br/><label>Universal Decimal Class. No.: </label>55(72)