Terminology in coal research.

Bibliographic Details

Other Authors:	Francis, Wilfrid, 1899-, Thiessen, Reinhardt, 1867-1938
Format:	Government Document eBook
Language:	English
Published:	[Washington?] : U.S. Government Printing Office, 1929.
Series:	Mines Bur. Technical Paper No. 446
Subjects:	Coal. Electronic books.
Online Access:	Connect to the full text of this electronic document