Topographic and geologic atlas of Pennsylvania
R. Y. Stuart
Publisher various: Harrisburg : [Pennsylvania] Topographic and Geologic Survey
by George H. Ashley ; Geology by G.H. Ashley and Frederick G. Clapp
[Pennsylvania] Topographic and Geologic Survey 1940 Topographic and geologic atlas of Pennsylvania no. 75
所蔵館1館
by Charles Butts, F.M. Swartz and Bradford Willard
[Pennsylvania] Topographic and Geologic Survey 1939 Topographic and geologic atlas of Pennsylvania no. 96
by Anna I. Jonas and George W. Stose
R. Y. Stuart c1926 Topographic and geologic atlas of Pennsylvania no. 178