Bureau of Mines / Minerals yearbook metals and minerals (except fuels) 1958
Year 1958, Volume I (1959)
Chandler, Henry P.; Tecker, Gertude E.
Abrasive materials, pp. 129-145 ff.
As a work of the United States government, this material is in the public domain.| For information on re-use see: http://digital.library.wisc.edu/1711.dl/Copyright