Gravity and aeromagnetic studies of the Powder River Basin and surrounding areas, southeastern Montana, northeastern Wyoming, and western South Dakota /
Robbins, S. L.(Stephen L.)
Denver, CO : U.S. Geological Survey ; Washington, D.C. : U.S. G.P.O.,
1994.
Includes bibliographical references (p. 14-17).
Gravity
Geomagnetism
Geology