Steijn, B. (1997). Training course on soillesless cultivation of vegetables. Novartis.
Chicago Style (17th ed.) CitationSteijn, Ben. Training Course on Soillesless Cultivation of Vegetables. Edimburgo: Novartis, 1997.
MLA (9th ed.) CitationSteijn, Ben. Training Course on Soillesless Cultivation of Vegetables. Novartis, 1997.
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