Dokumentuaren aipamena

APA aipamena

Oluf Chr. Bockman. (1990). Agriculture and fertilizers: Fertilizers in perspective. Norway: Norsk Hydro a.s.

Chicago Style aipamena

Oluf Chr. Bockman. Agriculture and Fertilizers: Fertilizers in Perspective. Norway: Norsk Hydro a.s, 1990.

MLA aipamena

Oluf Chr. Bockman. Agriculture and Fertilizers: Fertilizers in Perspective. Norway: Norsk Hydro a.s, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.

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