Clay

Author:	Tyler, Paul M.
Year:	1929
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	C 22.11:6155
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	6155
Subject:	Clay
Link:	https://hdl.handle.net/2027/mdp.39015077570318