Yazar
Allen Van Heyl
9 cilt bulundu.
Allen Van Heyl · U.S. G.P.O.
78 sayfa · 1962
Zinc mines and mining / Zinc ores / Ore deposits / Mines and mineral resources / Geology
Allen Van Heyl · Available from University of Wisconsin Geological and Natural History Survey
45 sayfa · 1978
Geology
Allen Van Heyl · University of Wisconsin, Geological and Natural History Survey
49 sayfa · 1970
Guidebooks / Ore deposits / Geology
Allen Van Heyl · U.S. Govt. Print. Off.
16 sayfa · 1966
Economic Geology / Geology, Economic / Geomagnetism / Lead ores / Magnetic anomalies
Allen Van Heyl · U.S. G.P.O.
201 sayfa · 1957
Economic Geology / Geology, Economic / Mines and mineral resources / Ore deposits / Uranium mines and mining
Timothy M. Millen, Robert E. Zartman, Allen Van Heyl · United States Geological
Sayfa sayısı yok · 1996
Analysis / Galena / Illinois Basin / Isotopes / Lead