Courses by Open University of Sri Lanka / Courses in Sri LankaDiploma in Natural Resources and Ecotourism 2020 / 2021 – Open University of Sri Lanka October 7, 2020 Closing Date – 2020-November-03 Diploma in Natural Resources and Ecotourism 2020 / 2021 – Open University of Sri Lanka English AdvertisementDownloadOnline ApplicationApply OnlineSource – Daily News (2020.10.07)