Yatawara, M.D.M.D.W.M.M.K.2016-06-232016-06-232015Yatawara, M.D.M.D.W.M.M.K. 2015. Lesson 32: Generation of biogas from degradable organic wastes, In: Practical Manual for GCE A/L Biosystem Technology Teachers. Ministry of Education and University of Kelaniya, Sri Lanka. 227-236 pp.978-955-4563-50-6http://repository.kln.ac.lk/handle/123456789/13675enLearning Object