000 00393nam a2200157Ia 4500
008 220907s9999 xx 000 0 und d
020 _aGSLRC
040 _aGS-LRC
_cR500 L55s 2007 V. 18
100 _aSimple Experiments
245 0 _aEducational Technologies Limited,China
250 _a80
260 _aEducational Technologies Limited
300 _a14102
942 _cGS-LRC
999 _c278
_d278