@book{UBHD-67072937, author={Witane, Godwin}, edition={1. ed.}, publisher={Godage International Publ.}, address={Colombo}, year={2007}, pages={284 S.}, language={eng}, isbn={978-955-30-0152-8}, library={SA [Signatur: 295 ldk 2011/3657::1]}, }