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Co-operative soil tests of fertilizers
(2011-07-28)
Some conclusions from experiments with fertilizers
(2011-07-28)
Corn and cotton
(2011-07-19)
Experiments with cotton, 1890
(2011-07-28)
Cotton experiments
(2011-07-28)
Co-operative soil test experiments for 1892
(2011-07-28)