Mine haulage ; Hoisting and hoisting appliances ; Surface arrangements at bituminous mines ; Surface arrangements at anthracite mines ; Percussive and rotary boring ; Compressed-air coal-cutting machinery
Автор: International Correspondence Schools, 729 стр., издатель: "Книга по Требованию", ISBN: 978-5-8832-0379-3


4 из 5, 3 голос(-ов).