Page View
Bureau of Mines / Minerals yearbook metals, minerals, and fuels 1971
(1971)
Reed, Avery H.
Gypsum, pp. 569-575 ff.
Page 569
![[page image]](http://images.library.wisc.edu/EcoNatRes/0022/0001/M/0577.gif)
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




