KOLAY A K. (2007). MANURES AND FERTILIZERS. ATLANTIC PUBLISHERS & DISTRIBUTERS, NEW DELHI.
Chicago-čujuhus (17. p.)KOLAY A K. MANURES AND FERTILIZERS. ATLANTIC PUBLISHERS & DISTRIBUTERS, NEW DELHI, 2007.
MLA-čujuhus (9. p.)KOLAY A K. MANURES AND FERTILIZERS. ATLANTIC PUBLISHERS & DISTRIBUTERS, NEW DELHI, 2007.
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