@book{bhlitem58273, title = {Basic slags and rock phosphates }, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/58273}, note = {https://www.biodiversitylibrary.org/bibliography/18635}, publisher = {Cambridge, University Press, 1922}, author = {Robertson, George Scott,}, year = {}, pages = {144}, keywords = {Phosphates|Slag|}, }