RECONSTRUCTION OF GROUNDWATER FLOW IN THE WATER-BEARING SYSTEM OF THE WARSAW-BERLIN ICE-MARGINAL VALLEY IN THE KOŚCIAN–WOLSZTYN AREA BASED ON LOCAL AND REGIONAL MODELS Journal title: Biuletyn Państwowego Instytutu Geologicznego Authors: Stanisław DĄBROWSKI, Beata JANISZEWSKA, Witold RYNARZEWSKI, Renata STRABURZYŃSKA-JANISZEWSKA Subject(s):