This is the discussion appearing on the right hand side of the matrix. Dietzgen Catalog Matrix Bruce Babcock, Ph.D. This matrix of Dietzgen slide rules, catalogs and price lists was compiled from a pool of 38 separate

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Date: 2017-03-17 07:20:15		This is the discussion appearing on the right hand side of the matrix. Dietzgen Catalog Matrix Bruce Babcock, Ph.D. This matrix of Dietzgen slide rules, catalogs and price lists was compiled from a pool of 38 separate Add to Reading List Source URL: osgalleries.org Download Document from Source Website File Size: 754,63 KB Share Document on Facebook