Minerals. Strategic minerals investigations, 1941: pt. 1, A-J, Short papers and preliminary reports, by Eugene Callaghan, S. W. Hobbs, L. R. Page, and others [and pt. 2, K-S, Short papers and preliminary reports, by C. H. Dane, R. G. Yates, C. F. Park, jr., and others, title pages, contents, and indexes].