Papers read before the Black Hills mining men’s association at their regular monthly meetings, on the mining and metallurgy of Black Hills ores, together with a brief outline of the mining industry of the Black Hills, and some statistics relating to the output of gold from the district T Technology
Paper technology, an elementary manual on the manufacture, physical qualities and chemical constituents of paper and of paper-making fibres T Technology
Paper testing methods, microscopical, chemical, and physical processes described, with an account of the apparatus employed T Technology
Paper testing methods, microscopical, chemical, and physical processes described, with an account of the apparatus employed T Technology
Partial report upon the comprehensive plan for the collection, purification and disposal of the sewage of the entire city. Report of the Bureau of Surveys, comprising the work at the Sewage Experiment Station at Spring Garden, Philadelphia, 1910 T Technology
Particulars relating to, and cost of procuring foreign patents at Howsons’ United States and foreign patent offices T Technology
