000			00277nam a2200109Ia 4500
008			210324s1968 xx 000 0 und d
041			_aeng
082			_a540.2
100			_aNuffield Foundations _91576736
245			_aCollected Experiments
260			_aLondon _bLongmans _c1968
999			_c1025304 _d1025304