000 00273nam a2200109Ia 45e0
008 181001s1975 xx 000 0 und d
100 _aSinger
245 0 _aEngineering mechanics
260 _aDelhi
_bKhanna pub.
_c1975
300 _a731
942 _2ddc
_cBK
999 _c2720
_d2720