Warta refers to:

Fish production in the Warta River: postimpoundment study
Fractal analysis of flow of the river Warta ☆
Fractal analysis of flow of the river Warta. J. Hydrolo. 200(1), 280-294
Climate Change Impacts on the Water Supply System in the Warta River Catchment, Poland
A long-term study (1985–1995) of fish populations in the impounded Warta River, Poland
Fish assemblage changes relative to environmental factors and time in the Warta River, Poland, and its oxbow lakes
Environmental influence on forest development and decline in the Warta River valley (Central Poland) during the Late Weichselian
Role of habitat degradation in determining fish distribution and abundance along the lowland Warta River, Poland
Climate-related river activity at the Weichselian-Holocene transition: a comparative study of the Warta and Maas rivers
Helminth Parasites of an Introduced Invasive Carnivore Species, the Raccoon (Procyon lotor L.), From the Warta Mouth National Park (...