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Title: High-Grade Silica Materials for Glass Refractories and Abrasives 
Link to PDF: http://purl.org/net/nysl/nysdocs/5996154
Series: Bulletin No. 203,204
Authors: Colony, R.J.
Publish Year: 1919  NYSM ID: B.203-204 
Page-Plate-Fig: 31 pp., 15 figs.
Category: Geological
Disiplines: Economic Geology
Footnote: Available bound in the Annual Report of the New York State Museum No. 71, v. 1. See that list for price. 
Out-of-print: Yes
Keywords: high, grade, silica, glass, refractories, abrasives, economic, geology 
Description: This is Bulletin 203 and 204 
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