00265nam a2200097Ia 4500008004100000082001600041100002900057245004000086260003300126300000800159140113s9999    xx            000 0 und d  a578.08   L5  a"Behringer, Marjorie.P."  aTechniques and materials in biology  a1975bMc Graw HillcNew York  a600