Yazar
Edward Steidle
9 cilt bulundu.
Cilt sonuçları
Roots of human progress
Edward Steidle · School of Mineral Industries
20 sayfa · 1948
Science and civilization / Mineral industries / Study and teaching
Wanted: mineral industries colleges
Edward Steidle · [Pennsylvania State College] School of Mineral Industries
116 sayfa · 1950
Mineral industries / Study and teaching
Causes and prevention of fires and explosions in bituminous coal mines
Edward Steidle · Dept. of the Interior, Bureau of Mines
75 sayfa · 1920
Mine explosions / Mine fires / Prevention / Coal mine accidents / Safety measures