@book{UBHD-3506034, author={Borchert, John R.}, title={America's northern heartland}, publisher={Univ. of Minnesota Press}, address={Minneapolis, Minn.}, year={1987}, pages={VIII, 250 S}, language={eng}, isbn={0-8166-1498-9 and 0-8166-1499-7 and 978-0-8166-1498-1 and 978-0-8166-1499-8}, library={UB [Signatur: UBN/RU 35053 B726] ; GG [Signatur: <GG> Tc 208]}, }