At head of title: Second Geological Survey of Pennsylvania: 1874-5.Microform.Mode of access: Internet
Reports are transmitted to the Senate or House of Representatives of the General Assembly.Mode of ac...
Mode of access: Internet.Continued by: Topographic and geological survey of Pennsylvania (1912).Cont...
This is the report of the 2nd Geological Survey.Prepared under the direction of J.S. Newberry, State...
At head of title: Second geological survey of Pennsylvania: 1876-8, MM.Mode of access: Internet
At head of title: Second geological survey of Pennsylvania: 1879-1880. M3.Mode of access: Internet
At head of title: Second geological survey of Pennsylvania: 1879.Mode of access: Internet
At head of title: Second geological survey of Pennsylvania: Report of progress in 1879. VV.Mode of a...
At head of title: Second geological survey of Pennsylvania. 1877.Mode of access: Internet
At head of title: Second geological survey of Pennsylvania. Report of progress in 1878. QQQ.Mode of ...
At head of title: Second geological survey of Pennsylvania: Report of progress, 1879. QQQQ.Mode of a...
At head of title: Second geological survey of Pennsylvania: Report of progress G6. 1881.Folded plate...
"The publications of the Second geological survey of Pennsylvania. From 1874 to 1885": 13 p. (at end...
Mode of access: Internet.Continued by: Geological Survey of Pennsylvania. Annual report on the geolo...
By Henry D. Rogers, State Geologist.Issued as Senate and House editions.Mode of access: Internet
At head of title: Second geological survey of Pennsylvania. Report of progress. F3 1888-1889.Mode of...
Reports are transmitted to the Senate or House of Representatives of the General Assembly.Mode of ac...
Mode of access: Internet.Continued by: Topographic and geological survey of Pennsylvania (1912).Cont...
This is the report of the 2nd Geological Survey.Prepared under the direction of J.S. Newberry, State...
At head of title: Second geological survey of Pennsylvania: 1876-8, MM.Mode of access: Internet
At head of title: Second geological survey of Pennsylvania: 1879-1880. M3.Mode of access: Internet
At head of title: Second geological survey of Pennsylvania: 1879.Mode of access: Internet
At head of title: Second geological survey of Pennsylvania: Report of progress in 1879. VV.Mode of a...
At head of title: Second geological survey of Pennsylvania. 1877.Mode of access: Internet
At head of title: Second geological survey of Pennsylvania. Report of progress in 1878. QQQ.Mode of ...
At head of title: Second geological survey of Pennsylvania: Report of progress, 1879. QQQQ.Mode of a...
At head of title: Second geological survey of Pennsylvania: Report of progress G6. 1881.Folded plate...
"The publications of the Second geological survey of Pennsylvania. From 1874 to 1885": 13 p. (at end...
Mode of access: Internet.Continued by: Geological Survey of Pennsylvania. Annual report on the geolo...
By Henry D. Rogers, State Geologist.Issued as Senate and House editions.Mode of access: Internet
At head of title: Second geological survey of Pennsylvania. Report of progress. F3 1888-1889.Mode of...
Reports are transmitted to the Senate or House of Representatives of the General Assembly.Mode of ac...
Mode of access: Internet.Continued by: Topographic and geological survey of Pennsylvania (1912).Cont...
This is the report of the 2nd Geological Survey.Prepared under the direction of J.S. Newberry, State...