Available Indexes

Mineral industries :
vocational-technical, in-service, and up-grading, extension and corresponding instruction.


Corporate Author: Pennsylvania State College.
Language(s): English
Published: State College, Pa.: School of Mineral Industries, Pennsylvania State College, [1946]
Subjects: Mineral industries > Mineral industries / Study and teaching.
Physical Description: 35 p. : ill. ; 27 cm.
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