Routes of the scientific excursions of the XVIII International limnological congress
английский/Routes of the scientific excursions of the XVIII International limnological congress / Ed. by S. V. Kalesnik, Acad. ; Acad. of sciences of the USSR.Routes of the scientific excursions of the XVIII International limnological congress / Ed. by S. V. Kalesnik, Acad.Routes of the scientific excursions of the XVIII International limnological congress.L./"Nauka", Leningrad branch/, 1971 ( ). - "Nauka", Leningrad branch, 1971. - 51 с. : ил. ; 20 см см.Routes of the scientific excursions of the XVIII International limnological congress. L., 1971 .
На обл. надзаг. на латин. яз.: Limnologorum conventus XVIII.Гф2-900(а)/ International limnological congress ( 18; 1971; Leningrad ). Kalesnik ./
На обл. надзаг. на латин. яз.: Limnologorum conventus XVIII.Гф2-900(а)/ International limnological congress ( 18; 1971; Leningrad ). Kalesnik ./