Johnston, P. M.  1904-1989. <br/><br/>
Geology and ground-water resources of Washington, D. C., and vicinity / 
with a section on chemical quality of the water by D. E. Weaver and Leonard Siu. 
 - Washington :  U.S. Govt. Print. Off.,  1964. 
 - vi, 97 p. :  illus., maps (2 fold., 1 col., in pocket), diagrs., tables ;  24 cm. 
 - Geological Survey (U.S.) Water-supply paper  1776 .
 - Water-supply paper (Washington, D.C.) ;  1776. .
<br/><br/>With : Geology and ground-water resources of Washington County, Colorado -- Ground-water resources in southern Oahu, Hawaii.  Washington : U.S. Govt. Print. Off., 1964.  Bound together subsequent to publication. 
<br/><br/>Bibliography: p. 88-94. 
<br/><br/><label>LCCN: </label>gs 64000273  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Washington Metropolitan Area.<br/>Water-supply--Washington Metropolitan Area.<br/>Groundwater--Washington Metropolitan Area.<br/>Water--Composition.
<br/><br/><label>LC Class. No.: </label>TC801  / .U2 no. 1776