Keefer, Eleanor K. <br/><br/>
Description of individual data items and codes in CRIB / 
by Eleanor K. Keefer and James A. Calkins 
 - Washington, D. C. :  U.S. Dept. of the Interior, Geological Survey,  1978 
 - iii, 32 p. :  ill. ;  26 cm. 
 - Geological Survey circular ;  755-B .
<br/><br/><label>Subjects--Topical Terms: </label><br/>CRIB (Information retrieval system)
<br/><br/><label>Dewey Class. No.: </label>025.1