Farm soils, their management and fertilization
Worthen, Edmund L.
Farm soils, their management and fertilization - 4 ed. - New York : Wiley, 1948 - 510 p. : ilus.
52781
Fertilizantes y abonos.
Suelos.
631.4 / W67
Farm soils, their management and fertilization - 4 ed. - New York : Wiley, 1948 - 510 p. : ilus.
52781
Fertilizantes y abonos.
Suelos.
631.4 / W67