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History
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V. Dokuchaev (Saint Petersburg, 1888)
V. Dokuchaev (Saint Petersburg, 1888)
Dokuchaev's soil-formation factors
Dokuchaev's soil-formation factors
V. Dokuchaev, 1898
V. Dokuchaev, 1898
Grave.
Grave.
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A soil scientist examining horizons within a soil profile
A soil scientist examining horizons within a soil profile