@article{263413, note = {Distributed to depository libraries in microfiche.}, author = {Alexander, Richard B. and Smith, Richard A.}, url = {http://library.usi.edu/record/263413}, title = {County-level estimates of nitrogen and phosphorus fertilizer use in the United States, 1945 to 1985 [microform] /}, publisher = {U.S. Dept. of the Interior, U.S. Geological Survey ;}, recid = {263413}, pages = {iii, 12 leaves :}, address = {Reston, Va. :}, year = {1990}, }