KOHNKE HELMUT & FRANZMEIER D.P. (2013). SOIL SCIENCE SIMPLIFIED (4.). SCIENTIFIC INTERNATIONAL.
Čikaški stil citiranjaKOHNKE HELMUT i FRANZMEIER D.P. SOIL SCIENCE SIMPLIFIED. 4. NEW DELHI: SCIENTIFIC INTERNATIONAL, 2013.
MLA način citiranjaKOHNKE HELMUT i FRANZMEIER D.P. SOIL SCIENCE SIMPLIFIED. 4. SCIENTIFIC INTERNATIONAL, 2013.
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