Perera, W.R.H.2014-12-162014-12-161961The Ceylon Forester, 5(1-2)(New Series):p.50-69https://dl.nsf.gov.lk/handle/1/16406IndustriesTimber extractionWyssen skyline craneEconomic aspectThe use of Wyssen cables for extracting timber economically and their possible use in Ceylon