Summary, ground-water resources of Allegheny County,
Gallaher, John T., 1921-
Summary, ground-water resources of Allegheny County, Pennsylvania. - Harrisburg [Topographic and Geologic Survey] 1973. - vii, 71 p. illus., maps (1 fold. col. in pocket) 23 cm. - Pennsylvania. W35. . - Water resource report ; W35. .
"Prepared by the U. S. Geological Survey, Water Resources Division, in cooperation with the Pennsylvania Geological Survey." Spine title: Ground-water resources of Allegheny Co.
74623764
Water, Underground--Pennsylvania--Allegheny County.
Summary, ground-water resources of Allegheny County, Pennsylvania. - Harrisburg [Topographic and Geologic Survey] 1973. - vii, 71 p. illus., maps (1 fold. col. in pocket) 23 cm. - Pennsylvania. W35. . - Water resource report ; W35. .
"Prepared by the U. S. Geological Survey, Water Resources Division, in cooperation with the Pennsylvania Geological Survey." Spine title: Ground-water resources of Allegheny Co.
74623764
Water, Underground--Pennsylvania--Allegheny County.