Minor mineral fertilizer materials

Author:	Johnson, Bertrand Leroy.
Year:	1935
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:6830
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	6830
Subjects:	Fertilizers
	Mines and mineral resources
Link:	https://hdl.handle.net/2027/mdp.39015077568858