000 00262nam a2200109Ia 4500
008 231212s1981 xx 000 0 und d
041 _aeng
082 _a621.381952
100 _aMalvino Leach
245 _aDigital Principal And
260 _aDelhi
_bMcGrowh
_c1981
999 _c958880
_d958880