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008 210210b xxu||||| |||| 00| 0 eng d
041 _aeng
082 _a520/100
100 _aLEGOC (M J)
245 _aSimplified astronomy
260 _a
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300 _a22
650 _aSimplified
650 _aastronomy
690 _aAstronomy
906 _a008085
999 _c125960
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