@book{bhlitem249182, title = {George Engelmann : botanical notebook 52 : Pinus }, volume = {Box 23: Folder 4: Pinus: 1878}, copyright = {Public domain. The BHL considers that this work is no longer under copyright protection.}, url = {https://www.biodiversitylibrary.org/item/249182}, note = {https://www.biodiversitylibrary.org/bibliography/148256}, publisher = {}, author = {Engelmann, George,}, year = {1878}, pages = {21}, keywords = {(Charles Christopher),|1806-1894|1809-1884|1810-1888|1823-1890|1828-1910|Botanical illustration|Brewer, William Henry,|Correspondence|Engelmann, George,|Gray, Asa,|North America|Parry, C. C|Pinaceae|Pinus|Plant collecting|Plants|Roetter, Paulus|}, }