000 00332nam a2200145Ia 4500
001 14804
008 150525s9999 xx 000 0 und d
020 _a0-7166-2791-4
100 _a
245 _aYoung Scientist
250 _a0
260 _aChicago
_bWorld Book, Inc
_c1991
300 _a,;ill.
650 _aSCIENCE - ENCYCLOPEDIA
999 _c50242
_d50242