000 00303nam a2200121Ia 4500
008 220201s1979 xx 000 0 eng d
082 _a658.28
100 _aLal, RK
245 0 _aSanyantra upnuraksha & suraksha engineery
260 _bAllahbad: Sandhya Prakashan
_c1979
300 _a360
942 _2ddc
999 _c80752
_d80752