Building stones of our Nation's Capital / 
United States Department of the Interior, Geological Survey. 
 - Washington :  The Survey : for sale by the Supt. of Docs., U.S. Govt. Print. Off.,  1975. 
 - 36 p. :  col. ill. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Building stones--United States.<br/>Buildings--Washington (D.C.)
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Washington (D.C.)--Buildings, structures, etc.