Michael J. Singer. (2002). Soils an introduction. New Jersey: Prentice Hall.
Trích dẫn kiểu ChicagoMichael J. Singer. Soils an Introduction. New Jersey: Prentice Hall, 2002.
Deismireacht MLAMichael J. Singer. Soils an Introduction. New Jersey: Prentice Hall, 2002.
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