Environmental geology, Allegheny County and vicinity, Pennsylvania
Subtitle: description of a program and its results
By: by Reginald P. Briggs ; prepared in cooperation with the Appalachian Regional Commission.
Contributors: Appalachian Regional Commission.
Series: Geological Survey circular ; 747; Geological Survey circular ;; 747.
Publisher: Geological Survey
Published: 1977
Place of publication: [Washington]
Language: eng
Number of pages: 25
Subjects: Landslides -- Pennsylvania -- Allegheny Co.; Subsidences (Earth movements) -- Pennsylvania -- Allegheny Co.; Land use -- Pennsylvania -- Allegheny County.