by Mary Neal Schutz and Martin Almanza; Nebraska Educational Television Network, Lincoln, Nebraska; 27 pages
the 1990 position paper is in the form of resolutions
American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
American Society of Agronomy, Crop Science Society of America, Soil Science Society of America