Forum on Geologic Mapping Applications in the Washington-Baltimore Urban Area :  proceedings, Reston, Virginia, April 23, 1997 / 
edited by J. Wright Horton and Emery T. Cleaves. 
 - Washington :  Denver, CO :  U.S. G.P.O. ;  Free on application to the U.S. Geological Survey, Information Services,  1997. 
 - vi, 46 p. :  ill. ;  28 cm. 
 - U.S. Geological Survey circular ;  1148 .
<br/><br/> 'Sponsored by the U.S. Geological Survey and the Maryland Geological Survey.' 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geological mapping--Congresses.--Washington (D.C.) Region<br/>Geological mapping--Congresses.--Maryland--Baltimore Region
<br/><br/><label>LC Class. No.: </label>QE36  / .F615 1997