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George Hall Ashley

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Rhode Island Coal

George Hall Ashley · Govt. print. off.

Sayfa sayısı yok · 1915

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The Establishment, Purpose, Scope and Methods of the State Geological Survey

George Hall Ashley · McQuiddy printing company

33 sayfa · 1910

Geological surveys

Drainage Reclamation in Tennessee, First Papers: Drainage Peoblems [!] in ...

Tennessee State Geological Survey, George Hall Ashley · [Folk-Keelin printing co .]

82 sayfa · 1910

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GeologyThe Canadian systemGeorge Hall Ashley

The Canadian system

George Hall Ashley · Dept. of Internal Affairs

10 sayfa · 1928

Geology

NomenclatureClassification and nomenclature of rock unitsGeorge Hall Ashley

Classification and nomenclature of rock units

George Hall Ashley · Geological Society of America

459 sayfa · 1933

Geology / Nomenclature

CiltOil and Gas Fields of PennsylvaniaGeorge Hall Ashley, J French Robinson

Oil and Gas Fields of Pennsylvania

George Hall Ashley, J French Robinson · Creative Media Partners, LLC

Sayfa sayısı yok · 2018

Kategori yok

CiltEstablishment, Purpose, Scope and Methods of the State Geological SurveyGeorge H. (George Hall) 1866-19 Ashley

Establishment, Purpose, Scope and Methods of the State Geological Survey

George H. (George Hall) 1866-19 Ashley · Creative Media Partners, LLC

Sayfa sayısı yok · 2018

Kategori yok

Pennsylvania -- Description and travelThe scenery of PennsylvaniaAshley, Geo. H. (George Hall), 1866-1951

The scenery of Pennsylvania

Ashley, Geo. H. (George Hall), 1866-1951 · Pennsylvania Topographic and Geologic Survey

102 sayfa · 1933

Pennsylvania -- Description and travel

Mineral industries Pennsylvania.The story of the Pennsylvania surveyAshley, Geo. H. (George Hall), b. 1866.

The story of the Pennsylvania survey

Ashley, Geo. H. (George Hall), b. 1866. · Pennsylvania Bureau of Topographic and Geologic Survey

22 sayfa · 1921

Pennsylvania. Bureau of Topographic and Geologic Survey / Mines and mineral resources Pennsylvania / Mineral industries Pennsylvania.

Mineral industries -- PennsylvaniaThe story of the Pennsylvania survey / by George H. Ashley.Ashley, Geo. H. (George Hall), 1866-1951.

The story of the Pennsylvania survey / by George H. Ashley.

Ashley, Geo. H. (George Hall), 1866-1951. · Pennsylvania Bureau of Topographic and Geologic Survey

26 sayfa · 1921

Mineral industries -- Pennsylvania

Mines and mineral resources -- PennsylvaniaPunxsutawney quadrangle; geology and mineral resources / by George H. Ashley. Prepared in cooperation with the United States Geological surveyAshley, Geo. H. (George Hall), 1866-1951.

Punxsutawney quadrangle; geology and mineral resources / by George H. Ashley. Prepared in cooperation with the United States Geological survey

Ashley, Geo. H. (George Hall), 1866-1951. · Pennsylvania Bureau of Topographic and Geologic Survey

160 sayfa · 1926

Mines and mineral resources -- Pennsylvania

Mines and mineral resources -- Pennsylvania -- Clearfield CountyCurwensville quadrangleAshley, Geo. H. (George Hall), 1866-1951.

Curwensville quadrangle

Ashley, Geo. H. (George Hall), 1866-1951. · Pennsylvania Topographic and Geologic Survey

308 sayfa · 1940

Mines and mineral resources -- Pennsylvania -- Clearfield County

Geology -- Pennsylvania -- BibliographyA syllabus of Pennsylvania geology and mineral resources / by George H. Ashley.Ashley, Geo. H. (George Hall), 1866-1951.

A syllabus of Pennsylvania geology and mineral resources / by George H. Ashley.

Ashley, Geo. H. (George Hall), 1866-1951. · Pennsylvania Bureau of Topographic and Geologic Survey

168 sayfa · 1931

Geology -- Pennsylvania -- Bibliography