Gravity and aeromagnetic studies of the Powder River Basin and surrounding areas, southeastern Montana, northeastern Wyoming and western South Dakota /
Robbins, Stephen L.
Gravity and aeromagnetic studies of the Powder River Basin and surrounding areas, southeastern Montana, northeastern Wyoming and western South Dakota / Stephen L. Robbins - Washington D. C. : U. S. Government Printing Office, 1994. - iv, 17 p. : ill ; 27 cm - U. S. Geological Survey bulletin ; 1917-R .
PTSL : including Map
Gravity and aeromagnetic studies of the Powder River Basin and surrounding areas, southeastern Montana, northeastern Wyoming and western South Dakota / Stephen L. Robbins - Washington D. C. : U. S. Government Printing Office, 1994. - iv, 17 p. : ill ; 27 cm - U. S. Geological Survey bulletin ; 1917-R .
PTSL : including Map