TY - T1 - Manual for Integrated Monitoring. Subprogramme Hydrobiology of Lakes SN - 951-47-7578-3 / 0786-9606 UR - http://hdl.handle.net/10138/157609 T3 - Publications of the Water and Environment Administration - Series B 16 A1 - Keskitalo, Jorma; Salonen, Kalevi A2 - PB - National Board of Waters and the Environment Y1 - 1994 LA - en AB - ... VO - IS - SP - OP - KW - aquatic ecosystems; monitoring; methods N1 - PP - ER -