000 00362nam a2200157Ia 4500
008 180626s9999 xx 000 0 und d
082 _22nd
082 _a500 B614e 1979
100 _aBlecha, Milo K.
245 0 _aExploring science gold book
260 _aIllinois
260 _bLaidlaw Brothers
260 _cc1979
300 _a192 p
650 _aScience
999 _c47418
_d47418