00390nam a2200121Ia 4500082001900000100001800019245009900037260004800136300001700184490005700201500000500258700000500263  a530.2bB592.IM  aBiggs, Norman  aInteraction models; course given at Royal Holloway college, Univ. of London, Oct.- Dec. 1976b  aCambridgebCambridge University Pressc1977  a101p. Index,  aLondon Mathematical Society lecture note seriesv 30  a  a