International Annual Fertilizer Sham El-Sheikh, Egypt, & Arab Fertilizer Association. (2007). 13th AFA International Annual Fertilizer Forum: 6 - 8 February, 2007 : Sharm El-Sheikh, Egypt : Papers. Arab Fertilizer Association.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)International Annual Fertilizer Sham El-Sheikh, Egypt, ба Arab Fertilizer Association. 13th AFA International Annual Fertilizer Forum: 6 - 8 February, 2007 : Sharm El-Sheikh, Egypt : Papers. Sharm El-Sheikh, Egypt: Arab Fertilizer Association, 2007.
MLA -ийн эшлэл (9 дэх хэвлэлт)International Annual Fertilizer Sham El-Sheikh, Egypt, ба Arab Fertilizer Association. 13th AFA International Annual Fertilizer Forum: 6 - 8 February, 2007 : Sharm El-Sheikh, Egypt : Papers. Arab Fertilizer Association, 2007.
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