Add to ORKGPublished under the auspices of the United States Geological Survey."Washington to Baltimore, Maryland and York, Pennsylvania, by A.L. Jonas and E.B. Knopf": p. 27-31.Mode of access: Internet
(In U.S. Geological survey. 6th annual report, 1884-85, p. 353-398. illus. 30cm, Washington, 1885)Mo...
At head of title: Pennsylvania geological survey, fourth series.Mode of access: Internet
Reports are transmitted to the Senate or House of Representatives of the General Assembly.Mode of ac...
cover-title."Read before the American philosophical society, Aug. 15, 1879."Mode of access: Internet
By Henry D. Rogers, State Geologist.Issued as Senate and House editions.Mode of access: Internet
"Special publication, volume IV, part I."At head of title: Maryland Geological survey.Mode of access...
Mode of access: Internet.Continued by: Topographic and geological survey of Pennsylvania (1912).Cont...
"Special publication, Report on the coals of Maryland, volume V, part IV.At head of title : Maryland...
"The publications of the Second geological survey of Pennsylvania. From 1874 to 1885": 13 p. (at end...
"Special publication, volume III, part III."At head of title: Maryland Geological Survey.Mode of acc...
Reprinted from "Anne Arundel County," published by Maryland Geological survey. 1917.Biography.Thesis...
Extract from the 15th annual report of the U. S. Geological survey, 1893-94.cover-title.Mode of acce...
Reprinted from the: Bulletin of the American Bureau of Geography, v.1, 1900.Mode of access: Internet
Richard R. Hice, State Geologist.At head of title: Topographic and Geologic Survey of Pennsylvania.M...
At head of title: Second geological survey of Pennsylvania: Report of progress, 1879. QQQQ.Mode of a...
(In U.S. Geological survey. 6th annual report, 1884-85, p. 353-398. illus. 30cm, Washington, 1885)Mo...
At head of title: Pennsylvania geological survey, fourth series.Mode of access: Internet
Reports are transmitted to the Senate or House of Representatives of the General Assembly.Mode of ac...
cover-title."Read before the American philosophical society, Aug. 15, 1879."Mode of access: Internet
By Henry D. Rogers, State Geologist.Issued as Senate and House editions.Mode of access: Internet
"Special publication, volume IV, part I."At head of title: Maryland Geological survey.Mode of access...
Mode of access: Internet.Continued by: Topographic and geological survey of Pennsylvania (1912).Cont...
"Special publication, Report on the coals of Maryland, volume V, part IV.At head of title : Maryland...
"The publications of the Second geological survey of Pennsylvania. From 1874 to 1885": 13 p. (at end...
"Special publication, volume III, part III."At head of title: Maryland Geological Survey.Mode of acc...
Reprinted from "Anne Arundel County," published by Maryland Geological survey. 1917.Biography.Thesis...
Extract from the 15th annual report of the U. S. Geological survey, 1893-94.cover-title.Mode of acce...
Reprinted from the: Bulletin of the American Bureau of Geography, v.1, 1900.Mode of access: Internet
Richard R. Hice, State Geologist.At head of title: Topographic and Geologic Survey of Pennsylvania.M...
At head of title: Second geological survey of Pennsylvania: Report of progress, 1879. QQQQ.Mode of a...
(In U.S. Geological survey. 6th annual report, 1884-85, p. 353-398. illus. 30cm, Washington, 1885)Mo...
At head of title: Pennsylvania geological survey, fourth series.Mode of access: Internet
Reports are transmitted to the Senate or House of Representatives of the General Assembly.Mode of ac...