Special report on the trap dykes and Azoic rocks of southeastern Pennsylvania.
Hunt, Thomas Sterry, 1826-1892.
Special report on the trap dykes and Azoic rocks of southeastern Pennsylvania. By T. Sterry Hunt. Part I. Historical introduction. - Harrisburg, Pub. by the Board of commissioners for the Second geological survey, 1878. - Exxi, E253, 2, [1] p. front. (map) 23 cm. - Pennsylvania. Geological survey, 2d. [Report of progress E] . - Report of progress (Geological Survey of Pennsylvania), E. .
At head of title: Second geological survey of Pennsylvania: 1875. No more published.
gs 07000713
Geology--Pennsylvania.
Geology, Stratigraphic--Archaean.
QE653 / .H94
Special report on the trap dykes and Azoic rocks of southeastern Pennsylvania. By T. Sterry Hunt. Part I. Historical introduction. - Harrisburg, Pub. by the Board of commissioners for the Second geological survey, 1878. - Exxi, E253, 2, [1] p. front. (map) 23 cm. - Pennsylvania. Geological survey, 2d. [Report of progress E] . - Report of progress (Geological Survey of Pennsylvania), E. .
At head of title: Second geological survey of Pennsylvania: 1875. No more published.
gs 07000713
Geology--Pennsylvania.
Geology, Stratigraphic--Archaean.
QE653 / .H94