Mine openings :
Aldorf, Josef,
Mine openings : Stability and support / By josef aldorf and karel exner ; translated by milos svaton - 392 páginas - Developments in geotechnical engineering ; 40 .
0444995250
Perforación de pozos de minas
Control de las presiones del terreno (Minería)
TN283 / A5313
Mine openings : Stability and support / By josef aldorf and karel exner ; translated by milos svaton - 392 páginas - Developments in geotechnical engineering ; 40 .
0444995250
Perforación de pozos de minas
Control de las presiones del terreno (Minería)
TN283 / A5313