Επιστημονικό περιοδικό 1.543 Περιοδική έκδοση 1.337 Κυβερνητικό Έγγραφο 327 Ηλεκτρονική πηγή 41 Πρακτικό Συνεδρίου 31 Βιβλίο 25 Άρθρο 2 Εφημερίδα 1 Προβολή όλων ...

T - Τεχνολογία 2.928

United States Bureau of Mines 134 United States Mine Safety and Health Administration 37 Geological Survey (U.S.) 29 Colorado School of Mines 26 American Society for Metals 25 United States Energy Information Administration. Office of Oil and Gas 25 American Institute of Mining, Metallurgical, and Petroleum Engineers 23 Society of Petroleum Engineers (U.S.) 23 ASM International 22 Canada Mines Branch 22 Institution of Mining and Metallurgy (Great Britain) 21 New Mexico Bureau of Mines and Mineral Resources 21 American Institute of Mining and Metallurgical Engineers 20 Australasian Institute of Mining and Metallurgy 19 Colorado Bureau of Mines 17 Society of Petroleum Engineers of AIME 17 France Commission des Annales des mines 16 California State Mining Bureau 15 Institute of Metals 15 Interstate Oil Compact Commission 15 Canadian Institute of Mining and Metallurgy 14 American Petroleum Institute 13 Consultants Bureau 13 Illinois State Geological Survey 13 Metallurgical Society of AIME 13 United States Department of the Interior 13 United States Energy Information Administration 13 Canada Energy, Mines and Resources Canada 12 Iron and Steel Institute 12 Minerals, Metals and Materials Society 12 Προβολή όλων ...

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1918-1945 1 1939-1945 1 1939-1991 1 1945- 1 19th century 1 Since 1945 1

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