000 00300nam a2200121Ia 4500
008 220201s1991 xx 000 0 eng d
082 _a503
_bEDI
100 _aEditors of Child Craft
245 0 _aYoung scientst: discovery gases
260 _alondon
_bWorld Book
_c1991
300 _a62
942 _2ddc
999 _c33857
_d33857