000 00362nam a2200145Ia 4500
020 _a0335203930
082 _b83
_a500
100 _a"johnston,jane"
245 0 _aenriching early scientific learning
260 _b,Open university press
_aPhiladelphia
_c1999
300 _a100
944 _cTR
999 _c278825
_d278825