| Avaa | Heikkinen, Kaisa
| Organic matter, iron and nutrient transport, nature of dissolved organic matter and bacterioplankton densities in a humic river in Northern Finland | | opinnäyte | väitöskirjat | Water and Environment District of Oulu and Department of Botany University of Ou | Oulu | 1992 | 230 | 951-42-3321-2 ; 0355-3191 | Acta Universitatis Ouluensis. A: Scientiae Rerum Naturalium | nro 231 | I-väitöskirjat |