Polynomial surface fitting using sample data from an underground copper deposit

Author:	Hewlett, Richard F.
Year:	1964
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:6522
Series:	Report of investigations / Bureau of Mines ;
Report Number:	6522
Subjects:	Copper--Assaying
	Copper ores
Link:	https://hdl.handle.net/2027/mdp.39015078468256