http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Maps showing uranium-bearing diatremes of the Hopi Buttes, Arizona
2 maps ; 65 x 119 cm., sheets 100 x 137 cm. and 82 x 126 cm., folded in envelope 25 x 32 cm.
by Karen J. Wenrich and Joseph F. Mascarenas ; Department of the Interior, United States Geological Survey.
Relief shown by contours and spot heights.
Miscellaneous field studies ; map MF-1310