http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Bureau of Topographic and Geologic Survey.
Dept. of Forests and Waters, Topographic and Geologic Survey
volumes : illustrations, maps, plates (some folded) ; 23 cm.
pt. 1. Introductory volume : General information on coal / by G.H. Ashley -- pt. 2. Detailed description of coal fields, by J.D. Sisler -- pt. 3. Introductory volume : Coal resources / by J.F. Reese and J.D. Sisler -- pt. 4. Introduction : Coal analysis / prepared by U.S. Bureau of Mines.
Includes bibliographical references and indexes.