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Resume of work of the nonmetals division :calendar year 1936

Annual report of the nonmetals division, fiscal year 1937

Beneficiation of spodumene by decrepitation

Flotation and agglomerate concentration of nonmetallic minerals

Annual report of the nonmetals division :fiscal year 1938

Annual report of the nonmetals division, fiscal year 1939

Published Year

1930-1939 (6) *

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Author