Unknown. (2023). Report of the Forest Products Research Board with the Report of the Director of Forest Products Research for the Period Ended 31st December, 1929. Forest Research Institute.
Chicago-referens (17:e uppl.)Unknown. Report of the Forest Products Research Board with the Report of the Director of Forest Products Research for the Period Ended 31st December, 1929. Forest Research Institute, 2023.
MLA-referens (9:e uppl.)Unknown. Report of the Forest Products Research Board with the Report of the Director of Forest Products Research for the Period Ended 31st December, 1929. Forest Research Institute, 2023.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.