000 00313nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a622.42 M995
100 _aMYASNIKOV,A.A
245 0 _aPRINCIPLES OF COAL MINE VENTILATION PLANNING
260 _aNEW YORK
_bAmerind
_c1981
300 _a24X16
942 _cBK
_2DDC
999 _c19470
_d19470