000 00347nam a2200121Ia 4500
008 160509s9999 xx 000 0 und d
020 _a0036-8733
100 _aScientific American
245 _aScientific American : 1989 : Volume 260(Jan-Jun) : Shelf 23.4
260 _bScientific American
_c1989
300 _a104p.+
650 _aScientific American
999 _c4803
_d4803