Douglass, Raymond C. <br/><br/>
Morphologic studies of fusulinids from the lower Permian of west Pakistan / 
by Raymond C. Douglass. 
 -- Washington :   United States Government Printing Office,   1970 
 - 11 p., [7] h. de lam. -- 
 (Geological Survey Professional Paper  ;  643-G).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Foraminíferos fósiles<br/>Pakistan
<br/><br/><label>Universal Decimal Class. No.: </label>563.12(549)