Soil organic matter, its nature, its role in soil formation and in soil fertility /

Soil organic matter /
Published: (1978)

Soil organic matter and its role in crop production by F.E. Allison.
by: Allison, Franklin E. (Franklin Elmer), 1892-1972
Published: (1973)

Humus : origin, chemical composition, and importance in nature /
by: Waksman, Selman A. (Selman Abraham), 1888-1973
Published: (1938)

Humus ; origin, chemical composition, and importance in nature /
by: Waksman, Selman A. (Selman Abraham), 1888-1973
Published: (1936)

Humic substances in the environment /
by: Schnitzer, M.
Published: (1972)

Physical and chemical characteristics of aquatic humus /
by: Gjessing, Egil T., 1932-
Published: (1976)

Microorganisms and organic matter of soils /
Published: (1970)

Chemistry of soil organic matter /
by: Kumada, Kyōichi, 1921-
Published: (1987)

Studies of the ammonia-soluble organic matter of the soil /
by: Fraps, G. S. (George Stronach), 1876-
Published: (1910)

Soil organic matter : analysis and interpretation /
Published: (1996)

Humic substances : their structure and function in the biosphere : proceedings of an international meeting held at Nieuwersluis, the Netherlands, May 29-31, 1972 /
Published: (1975)

Chemistry of soil organic matter /
by: Kumada, Kyōichi, 1921-
Published: (1987)

Sustainable soils : the place of organic matter in sustaining soils and their productivity /
by: Wolf, Benjamin, 1913-
Published: (2003)

Humic matter in soil and the environment : principles and controversies /
by: Tan, Kim H. (Kim Howard), 1926-
Published: (2003)

Advances in soil organic matter research : the impact on agriculture and the environment /
Published: (2003)

Sustainable management of soil organic matter /
Published: (2001)

Nitrogen and soil organic matter : proceedings of a conference organized by the soil scientists of the National Agriculture Advisory Service, October 22nd-23rd 1964.
Published: (1969)

The Russian school of soil cartography and its influence on the soil cartography of the world. : (Russkaya pochvenno-kartograficheskaya shkola i ee vliyanie na razvitie mirovoi kartografii pochv) /
by: Vilenskiĭ, D. G. (Dmitriĭ Germogenovich), 1892-1960
Published: (1967)

Study week on organic matter and soil fertility. April 22-27, 1968.
Published: (1969)

Chemicals, humus, and the soil ; a simple presentation of contemporary knowledge and opinions about fertilizers, manures, and soil fertility /
by: Hopkins, Donald P.
Published: (1945)

Chemicals, humus, and the soil : a simple presentation of contemporary knowledge and opinions about fertilizers, manures, and soil fertility /
by: Hopkins, Donald Percy, 1909-
Published: (1949)

Soil organic matter and biological activity /
Published: (1985)

Structure and organic matter storage in agricultural soils /
Published: (1996)

Soil nitrogen /
by: Bartholomew, W. V. (William Victor), 1908-2004
Published: (1965)

Soil Nitrogen.
Published: (1965)

Soil nitrogen
by: Bartholomew, W. V. (William Victor), 1908-2004
Published: (1965)

Soil fertility and organic matter as critical components of production systems : proceedings of a symposium /
Published: (1987)

Organic matter content of soil after logging of fir and redwood forests /
by: Durgin, Philip B.
Published: (1980)

Organic soils and peat materials for substainable agriculture /
Published: (2003)

Building soils for better crops : organic matter management /
by: Magdoff, Fred, 1942-
Published: (1992)

Chemicals, humus, and the soil ; a simple presentation of contemporary knowledge and opinions about fertilizers, manures, and soil fertility.
by: Hopkins, Donald Percy, 1909-
Published: (1948)

Forest soils ; their properties and relation to silviculture.
by: Wilde, S. A. (Sergius Alexander), 1898-
Published: (1958)

Soil organic matter studies : proceedings of a symposium ... /
Published: (1977)

Organic materials as soil amendments in reclamation : a review of the literature /
Published: (1993)

Soil science and archaeology /
by: Limbrey, Susan
Published: (1975)

Acid sulphate soils.
by: Beers, W. F. J. van
Published: (1962)