000			00304nam a2200121Ia 4500
100			_aNuffield Secondary Science
942			_cBK
245			_aTheme 1: Interdependence of living things
260			_alondon _bLongman Groups Ltd. _c1971
082			_a375.5 _bN.S.S.
300			_a16,174
546			_aEnglish
999			_c339149 _d339149
041			_aeng