Landbouwhogeschool. Department of Soil Science and Geology. editor & Langen, B. v. (1993). Manual for chemical soil analyses. Department of Soil Science and Geology, Agricultural University.
Cita Chicago Style (17a ed.)Landbouwhogeschool. Department of Soil Science and Geology. editor y B. van Langen. Manual for Chemical Soil Analyses. Wageningen: Department of Soil Science and Geology, Agricultural University, 1993.
Cita MLA (9a ed.)Landbouwhogeschool. Department of Soil Science and Geology. editor y B. van Langen. Manual for Chemical Soil Analyses. Department of Soil Science and Geology, Agricultural University, 1993.
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