Mcgregor, K.
The drilling of rocks: K. Mcgregor - 1 ed. - London : C.R Books 1967. - 306p.; 25 cm.
hard cover mcg
TN279 / .M34 1967
The drilling of rocks: K. Mcgregor - 1 ed. - London : C.R Books 1967. - 306p.; 25 cm.
hard cover mcg
TN279 / .M34 1967