Unknown. (2023). Report of the Forest Authority for Ceylon Prepared for the British Empire Forestry Conference, Ottawa, Canada, 1923. Forest Research Institute.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Unknown. Report of the Forest Authority for Ceylon Prepared for the British Empire Forestry Conference, Ottawa, Canada, 1923. Forest Research Institute, 2023.
MLA -ийн эшлэл (9 дэх хэвлэлт)Unknown. Report of the Forest Authority for Ceylon Prepared for the British Empire Forestry Conference, Ottawa, Canada, 1923. Forest Research Institute, 2023.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.