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Opportunities for productive work through mineral industries research /

School of Mineral Industries, the Pennsylvania State College.

Book Cover
Published: State College, PA : Pennsylvania State College, School of Mineral Industries, 1945.
Series: Mineral Industries Experiment Station circular (Pennsylvania State College. Mineral Industries Experiment Station)
Topics: Mineral industries - Economic aspects - Pennsylvania. | Pennsylvania State College. Mineral Industries Experiment Station.
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Location & Availability for: Opportunities for productive work throug