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1Published 1986“...Pennsylvania Maps....”
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2Ashtabula, Ohio-Pennsylvania : 1:100 000-scale planimetric map 30 x 60 minute series (planimetric) /Published 1986“...Pennsylvania Maps....”
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3Published 1989“...Ashtabula, Ohio-Pennsylvania....”
Government Document Map -
4Published 1989“...Youngstown, Ohio-Pennsylvania....”
Government Document Map -
5Published 1835Subjects: “...Pennsylvania and Ohio Canal Company....”
Microform Book -
6Published 1986“...Pennsylvania Maps....”
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7Published 1961“...Pennsylvania-Ohio compact, Pymatuning Lake...”
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9
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10by Fuller, John G. (John Grant), 1913-1990Subjects: “...Tornadoes Pennsylvania....”
Published 1987
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11Published 1987Subjects: “...Wetlands Pennsylvania....”
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12Published 1987Subjects: “...Wetlands Pennsylvania....”
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13Published 1833Subjects: “...Canals Pennsylvania....”
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14Published 1986“...Pennsylvania Maps....”
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15Published 1986“...Pennsylvania Maps....”
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16Published 1989“...Pennsylvania Maps, Topographic....”
Government Document Map -
17by Girty, George Herbert, 1869-1939Subjects: “...Geology Pennsylvania....”
Published 1938
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18Published 1989“...Pittsburgh West, Pennsylvania--Ohio--West Virginia....”
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19Published 1989“...East Liverpool, Ohio--Pennsylvania--West Virginia....”
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20Published 1928Subjects: “...Coal mines and mining Environmental aspects Pennsylvania....”
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