000 00309cam a2200121 4500
020 _a0719546222 (pbk.)
100 1 _aBOYD Joe
245 0 _aUnderstanding science 1 :
_bTeachers' resource book
260 _aLondon:
_bJohn Murray,
_c1989
300 _a168p.
700 _aWHITELAW Walter
945 _i0010812
_rY
_sY
999 _c46104
_d46104