Detection of abandoned underground coal mines by geophysical methods.
Title:
Detection of abandoned underground coal mines by geophysical methods.
Author:
HRB-Singer, Inc. Environmental Sciences Branch.
Corporate Author:
Publication Information:
Washington : [U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1971 [that is, 1972]
Physical Description:
viii, 94 pages : illustrations ; 28 cm.
General Note:
"14010 EHN 04/71."
Language:
English
Added Author:
Format :
Book