NITROGEN BACTERIA AND LEGUMES
(With Special Reference to Red Clover, Cowpeas, Soy Beans, Alfalfa, and Sweet Clover, on Illinois Soils).
By CYRIL G. HOPKINS.
Work and Knowledge are a stronger team than Work and Work.
URBANA, ILLINOIS, FEBRUARY, 1904.
(With Special Reference to Red Clover, Cowpeas, Soy Beans, Alfalfa, and Sweet Clover, on Illinois Soils).
By CYRIL G. HOPKINS.
Work and Knowledge are a stronger team than Work and Work.
URBANA, ILLINOIS, FEBRUARY, 1904.