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1
Minerals Yearbook, 1935. Compiled under the supervision of O.E. Kiessling, chief economist, Mineral Resources and Economics Division.
Published 1936Subjects: Online Access
Government Document Electronic eBook -
2
Minerals Yearbook, 1934, [by] O.E. Kiessling, chief economist, Division of Mineral Statistics.
Published 1935Subjects: Online Access
Government Document Electronic eBook