Cite
MLA (8th Edition)
Geologic Map Showing the Thickness and Structure of the Anderson-Wyodak Coal Bed In the North Half of the Powder River Basin, Southeastern Montana and Northeastern Wyoming. For sale by Branch of Distribution, The Survey, 1991.
APA (7th Edition)
Geologic map showing the thickness and structure of the Anderson-Wyodak coal bed in the north half of the Powder River Basin, southeastern Montana and northeastern Wyoming. (1991). For sale by Branch of Distribution, The Survey.
Chicago (17th Edition)
“Geologic Map Showing the Thickness and Structure of the Anderson-Wyodak Coal Bed in the North Half of the Powder River Basin, Southeastern Montana and Northeastern Wyoming.” Denver, CO: For sale by Branch of Distribution, The Survey, 1991.