000 00321nam a2200145Ia 4500
020 _a0809473291
082 _b988
_a000
100 _a"NA"
245 0 _aSIMPLE EXPERIMENTS
260 _bTIME LIFE BOOKS,
_aHong Kong
_c1996
300 _a87
944 _cR
999 _c72633
_d72633