A study of crop yields and soil composition in relation to soil productivity.
Whitney, Milton.
A study of crop yields and soil composition in relation to soil productivity. By Milton Whitney. - Washington, Govt. print. off., 1909. - 127 p. incl. tables, diagrs. 23 cm.
agr09002410
Soils--Analysis.
S591 / .A12 no. 57
A study of crop yields and soil composition in relation to soil productivity. By Milton Whitney. - Washington, Govt. print. off., 1909. - 127 p. incl. tables, diagrs. 23 cm.
agr09002410
Soils--Analysis.
S591 / .A12 no. 57