(W 107⁰45'00"--W 107⁰37'30"/N 36⁰52'30"--N 36⁰45'00").
Relief shown by contour interval of 50 ft. and spot heights.
Text title: Coal resource occurrence maps and coal development potential map of the southwest quarter of the Navajo Dam 15-minute quadrangle, San Juan County, New Mexico.
Microfiche. [Denver, Colo. : U.S. Geological Survey, 1981?]. 6 microfiche ; 11 x 15 cm.
Includes bibliographical reference, ill., coal data sheet and location map.