| Avaa | Hakkari, L.
| On the productivity and ecology of zooplankton and its role as food for fish in some lakes in Central Finland | | artikkeli | ekologia, eläinplankton, järvi - järvet, ruoka, Suomi, tuottavuus | Jyväskylän yliopisto | Jyväskylä | 1978 | 87 | | Biological research reports fron the University of Jyväskylä 4/1978 | | |