The use of bell-shaped curves in projecting long-term mineral production
By: by P. A. Onesta, R. O. Heckroodt [and] W. C. J. Van Rensburg.
Contributors: Heckroodt, R. O., joint author.; Van Rensburg, W. C. J., joint author.
Publisher: Dept. of Planning
Published: 1971
Place of publication: [Pretoria]
Language: eng
Number of pages: 40
Subjects: Mineral industries -- South Africa.; Production functions (Economic theory)
Notes: Bibliography: p. 38.