http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Generalized geologic and summary geochemical maps of the Rolla 1⁰ x 2⁰ quadrangle, Missouri
2 maps ; 44 x 71 cm. each on 1 sheet 104 x 120 cm., folded in envelope 31 x 25 cm.
by R.L. Erickson, E.L. Mosier, and J.G. Viets.
Miscellaneous field studies ; map MF-1004A