Studies on nitrification and its relation to crop production on carrington loam
Erdman, Lewis W., Humfeld, Harry
Studies on nitrification and its relation to crop production on carrington loam - Ames 1928 - 260-291 p. - Iowa Agricultural Experiment .
Studies on nitrification and its relation to crop production on carrington loam - Ames 1928 - 260-291 p. - Iowa Agricultural Experiment .