Worthen, E. L., & Aldrich, S. R. (1956). Farm soils: Their fertilization and management (5th. ed. rev.). John Wiley.
Cita Chicago Style (17a ed.)Worthen, Edmund L., y Samuel R. Aldrich. Farm Soils: Their Fertilization and Management. 5th. ed. rev. New York: John Wiley, 1956.
Cita MLA (8a ed.)Worthen, Edmund L., y Samuel R. Aldrich. Farm Soils: Their Fertilization and Management. 5th. ed. rev. John Wiley, 1956.
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