000 00336nam a2200145Ia 4500
020 _a9780721432656
082 _b886
_a500
100 _a"Hurt, Roger"
245 0 _aPractice Science
260 _b,Ladybird Books Ltd
_aEngland
_c1993
300 _a16
944 _cBK
999 _c267225
_d267225