00298nam a2200097Ia 4500008004100000082002100041100004100062245003500103260005400138300000800192140113s9999    xx            000 0 und d  a577.486(04)   L5  a"Whittaker, R.H. & Levin, S.A., Ed."  aNiche : Theory and application  a1975bDowden Hutchinson & Ross Inc.cPennsylvenia  a448