Title: American Lignites: Geological Occurence, Petrographic Composition and Extractable Waxes
Author: Selvig, W.A.

Date: 1950
Link to Full Report:
Document Type: USBM
Issuing Agency: U.S. Bureau of Mines
Performing Organization: U.S. Bureau of Mines

Report Number: USBM Bulletin 482
SUDOC: TN 23 U4
Series: U.S. Bureau of Mines Bulletins