Fuel tests with Illinois coal : complied from etest made by the Technologic Branch of the United States Geological Survey at the St. Louis Mo. fuel testing plant, 1904-June 30, 1907 / by L.P. Breckenridge and Paul Diserens T Technology
Batter tables, for 192 batters from 1/16-in, 1/18-in, 3/16-in, to 12 inches per foot, giving altitude and hypothenuse in feet and decimals of feet for any base measured in feet, inches and sixteenths T Technology