000 00347nam a2200121Ia 4500
008 160509s9999 xx 000 0 und d
020 _a0036-8733
100 _aScientific American
245 _aScientific American : 1993 : Volume 269(Jul-Dec) : Shelf 23.4
260 _bScientific American
_c1993
300 _a108p.+
650 _aScientific American
999 _c6237
_d6237