000
00309nam a2200121Ia 4500
008
190703s9999 xx 000 0 und d
082
_a
622.23 K18
100
_a
KARANAM,U.M.R
245
0
_a
PRINCIPLES OF ROCK DRILLING
260
_a
NEW DELHI
_b
Oxford & IBH Publishing
300
_a
vii+265p.,
942
_c
BB
_2
DDC
999
_c
6277
_d
6277