Saha, Ratan Kumar. A work book on limnology / Ratan Kumar Saha. - / . - Delhi : Narendra Publishing House , 2010. - xxiv,192p. : Ills., plates, tables etc. ; 23cm. . NULL ISBN: 9789380428086 RS295.00 Subjects--Index Terms: LIMNOLOGY Dewey Class. No.: 551.48 / SAH/W