000 00343nam a2200121Ia 4500
001 MPKV061671
008 120911s9999 xx 000 0 und d
082 _a500
245 _aScientific American Vol 237 No.1-6
_c;
246 _aScientific American Vol 237 No.1-6
260 _aNew York
_bScientific American Inc.
_c1977
650 _aPure Science
999 _c59657
_d59657