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This bibliography is a revision, enlargement, and continuation to date of the bibliographic lists on metals and nonmetals except fuels previously published by the United States Geological Survey. It is compiled mainly from publications of the Survey, but cites also articles by Survey authors which have appeared UL other publications. Articles that treat of several metals or nonmetals or use other combinations of them than those in the subject headings are placed under " General," and some of them are repeated in the lists relating to particular deposits. The Survey publications, except those to which a price is affixed, .may be obtained free by applying to the Director, United States Geological Survey, Washington, D. C. The priced publications, except the folios of the Geologic Atlas, which can be obtained only from the Director, may be purchased from the Superintendent of Documents, Government Printing Office, Washington, D. C.; the monographs from either the Director or the Superintendent of Documents. The publications marked " Exhausted " are not available for distribution, but may be seen at the larger libraries of the country. GENERAL.

Contributions to economic geology, 1913, Part I, Metals and nonmetals except fuels--Publications by Survey authors on metals and nonmetals except fuels