@article{Sloan:286661, recid = {286661}, author = {Sloan, Roby}, title = {Agricultural Letter}, journal = {Agricultural Letter}, address = {1964-07-24}, series = {762}, month = {Jul}, year = {1964}, url = {http://ageconsearch.umn.edu/record/286661}, doi = {https://doi.org/10.22004/ag.econ.286661}, }