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No. 163 (June 1949)
Yahraes, Marjorie A.
Glass and ceramics, pp. 15-22
PDF (4.1 MB)
Page 20
![[page image]](http://images.library.wisc.edu/History/EFacs/GerRecon/omg1949n163/XL/0022.jpg)
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



