Coal age second operating handbook of undergraund mining /
Chironis, Nicholas P.,
Coal age second operating handbook of undergraund mining / Edited by Nicholas p. chironis - 423 páginas
070114617
Minas de carbón--Manuales
TN802.H8 / C44
Coal age second operating handbook of undergraund mining / Edited by Nicholas p. chironis - 423 páginas
070114617
Minas de carbón--Manuales
TN802.H8 / C44