@book{UBHD-1097334, title={Research methods}, edition={2. ed.}, publisher={Addison-Wesley}, address={Reading, Mass.}, year={1968}, pages={XV, 819 S.}, language={eng}, isbn={0-201-04263-0 and 978-0-201-04263-4}, note={Literaturangaben}, library={UB [Signatur: 74 B 4889::2] ; EW [Signatur: A Nma 1.2::II] ; PI [Signatur: <PI> 410 Lin 2::2] ; SP [Signatur: PS 30,7] ; WS [Signatur: WS/CV 1000 L754(2)-2]}, }