000 00286nam a22001217a 4500
999 _c418
_d418
020 _a0858595958
082 _a500
_bPAR
100 _aParkes.Dorothy
245 _aHeinemann Science In Context
_cParkes Dorothy
260 _bJohn Murray (Publishers)Ltd.
_c1991
300 _a222p.
942 _cL