000
00296nam a2200109Ia 4500
008
190703s9999 xx 000 0 und d
082
_a
622.33 S615
100
_a
SINGH,R.D
245
0
_a
PRINCIPLES AND PRACTICES OF MODERN COAL MINING
260
_a
NEW DELHI
_b
NEW AGE INTERNATIONAL
942
_c
BB
_2
DDC
999
_c
5673
_d
5673