@book{bhlpg17847582, title = {Journal kept by David Douglas during his travels in North America 1823-1827, together with a particular description of thirty-three species of American oaks and eighteen species of Pinus, with appendices containing a list of the plants introduced by Douglas and an account of his death in 1834. Published under the direction of the Royal Horticultural Society }, url = {https://www.biodiversitylibrary.org/page/17847582}, publisher = {W. Wesley & Son}, author = {Royal Horticultural Society (Great Britain) }, year = {1914}, pages = {Page 278}, } @book{bhlpg39618232, title = {Observations sur la géologie, la minéralogie, la zoologie et la botanique de la côte du Labrador, du détroit et de la Baie d'Hudson }, url = {https://www.biodiversitylibrary.org/page/39618232}, publisher = {s.n}, author = {Bell, Robert, 1841 -1917}, year = {1884}, }