This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced

Excerpt from The Mining World Index of Current Literature, Vol. 3: First Half Year, 1913 In the mining world index or current literature this tremendous mass is

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typ

Excerpt from The Mining World Index of Current Literature, Vol. 7: First Half Year, 1915 Electricity Combustion Engines Steam and Steam Engines Compressed Air G