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Archean and Early Proterozoic Tectonic Framework of North-Central United States and Adjacent Canada
From abstract: This report contains the analysis of the southern part of the Canadian Shield and the subsurface of the southern interior platform where they comprise two Archean cratons and three Early Proterozoic collisional orogens.
Date:
1995
Creator:
Sims, P. K. (Paul Kibler), 1918-2011
System:
The UNT Digital Library
Adsorbent Clays: Their Distribution, Properties, Production, and Uses
From Abstract: "This bulletin is a summary of present knowledge of the adsorbent or bleaching clays-their distribution, field and laboratory identification, physical and chemical properties, uses, quality, and value. Problems in the drying, treating with acids, and washing are discussed, and methods of testing and rating decolorizing efficiency are described."
Date:
1943
Creator:
Nutting, P. G.
System:
The UNT Digital Library