Manual for oil and gas operations Including operating regulations to govern the production of oil and gaa tinder the Acta of .... of the Pacific Northwest : occurrence, possible methods of preparation and testing of oehers. slennss, snd colored clays, ... A atudy of refractories service condltlona in boiler furnarea. by R. A. Sherman. .... by A. L. Godbert and H. P. Greenwald. 1833.a 190. Sloping methods and costs, by Ei F. Jackson and K. D. Gardner. ... Copier mining In North America, by b.
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