00871nam0-2200325---450 99001000611040332120210521113950.00387096205001000611FED01001000611(Aleph)001000611FED0100100061120151016d1980----km-y0itay50------baengDE--------001yyDiffusion and ecological problemsmathematical modelsAkira OkuboBerlinSpringer1980XIII, 254 p.25 cmUniversitext10577.0122itaOkubo,Akira295751ITUNINARICAUNIMARCBK990010006110403321C-42-(105365MA1FAGBCMA1Diffusion and ecological problems380206UNINA