000 00361nam a2200145Ia 4500
020 _a0717225615
082 _b712
_a000
100 _a"About How Things Work"
245 0 _aQuestions Kids Ask About How Things Work
260 _bGrolier Limited
_aCanada
_c1989
300 _a31
944 _cR
999 _c784419
_d784419