Samantha, N.P.G.Vidanapathirana, R.Rambukwella, R.Hector Kobbekaduwa Agrarian Research and Training Institute2014-07-182014-07-182013978-955-612-145-2https://dl-harti.nsf.gov.lk//handle/1/2408vii, 45p.Big OnionsSeed ProductionMarketingIssues in big onion seed production and marketing