00518nam a2200169Ia 450000500170000000800410001702000180005804100080007608200100008424501370009425000060023126400300023730000280026765000060029565500160030170000310031720260922095759.0260922s9999    xx            000 0 und d  a0-86272-697-2  aeng  a500.310aScience Encyclopedia b: The Most Comprehensive Science Encyclopedia Over 3000 Illustrations, 1000 main entries and 200 experiments   a1  aLondon bKingfisherc1991  a768 hlm.bilus.c27  cm 4a0  aGrade 10-121 aCatherine Headlam eeditor