00285nam a2200097Ia 4500008004100000082002800041100002700069245002900096260005400125300000800179140113s9999    xx            000 0 und d  a574.909(48)(047.3)   L3  a"Nilson, Siwert., Ed."  aScandinavian Acrobiology  a1973b"NFR, Swedish Natural Res. Council"cSweden  a222