@book{bhlitem56843, title = {The book of butter; a text on the nature, manufacture and marketing of the product }, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/56843}, note = {https://www.biodiversitylibrary.org/bibliography/17505}, publisher = {New York, The Macmillan company, 1918}, author = {Guthrie, Edward Sewall,}, year = {}, pages = {300}, keywords = {Butter|}, }