Punnia Puvirajasinghe, Joachim Benedict Antonimus2012-03-142012-03-1419601960Source: Dissertation Abstracts International, Volume: 72-06, Section: A, page: .http://hdl.handle.net/10393/21999http://dx.doi.org/10.20381/ruor-17817Abstract not available.219 p.Economics, Agricultural.South Asian Studies.Agriculture, Fisheries and Aquaculture.Thesis