%0 Thesis %0 Monograph %A Kisand, Veljo %I Tartu University Press %D 1998 %C Tartu %G English %G Estonian %B Dissertationes biologicae Universitatis Tartuensis, %@ 9985563565 %@ 1024-6479 ; %T Responses of planktonic bacteria to the abiotic and biotic factors in the shallow lake Võrtsjärv