000 00284nam a2200121Ia 4500
008 211209s1980 xx 000 0 und d
041 _aeng
082 _a621.8 N80 BAL
100 _aBALLANEY P L
245 _aTHEORY OF MACHINES
260 _bKHANNA PUBLISHERS
_c1980
300 _a1260
999 _c12935
_d12935