000 00300nam a2200109Ia 4500
008 220421s1991 xx 000 0 und d
041 _aeng
082 _a503
_bWAL/MAC
100 _aWalpole, Brenda
_9571092
245 _aMacmillan revised Encyclopedia of science. -6
260 _aUSA
_b MacMillan
_c1991
999 _c397233
_d397233