/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Steven%2C%20Thomas%20August%2C%22&sort_by=relevance&format=rss 2 0 50 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=29488 By Steven, Thomas August,.
Washington, U.S. Govt. Print. Off., 1960 .
iv, 70 p. , Part of illustrative matter fold. in pocket. | "Prepared in cooperation with the Colorado Metal Mining Fund Board." 30 cm..

]]> Place hold on Geology and ore deposits of the Summitville district, San Juan Mountains, Colorado,

]]> /cgi-bin/koha/opac-detail.pl?biblionumber=29488 ISBN: /cgi-bin/koha/opac-detail.pl?biblionumber=30214 By Steven, Thomas August,.
Washington, U.S. Govt. Print. Off., 1965 .
90 p. , Prepared in cooperation with the Colorado State Metal Mining Fund Board. 29 cm..

]]> Place hold on Geology and structural control of ore deposition in the Creede district,

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