00373nas a2200121Ia 450000500170000000800410001702200140005808200070007210000530007924500240013226000590015630000360021520250805111654.0250805c99999999xx ||||||||||||   ||und||  a0036-8733  223  aScientific American, A Divison of Nature America 0aScientific American  bScientific American, A Divison of Nature Americac2024  aVol. CCCXXX No. 4-6bHard Bound