Building stones of Pennsylvania /
Stone, Ralph W. 1876-1964.
Building stones of Pennsylvania / by Ralph W. Stone. - Harrisburg, Pa. : Dept. of Internal Affairs, Topographic and Geologic Survey, 1932. - vii, 316 p. : ill., 1 folded map ; 23 cm. - Bulletin M ; 15 .
At head of title: Pennsylvania Geological Survey, Fourth series.
Includes index.
gs 32000243
Building stones--Pennsylvania.
TN951.P4 / S7
Building stones of Pennsylvania / by Ralph W. Stone. - Harrisburg, Pa. : Dept. of Internal Affairs, Topographic and Geologic Survey, 1932. - vii, 316 p. : ill., 1 folded map ; 23 cm. - Bulletin M ; 15 .
At head of title: Pennsylvania Geological Survey, Fourth series.
Includes index.
gs 32000243
Building stones--Pennsylvania.
TN951.P4 / S7