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CIVIL ENGINEERING DIMENSION: Vol. 13, No. 2, September 2011 ( RAK 7-N TEKNIK ).
JOURNAL Of Agricultural Science and Technology B Vol. 2 No. 2, Februari 2012 (Rak 7-M : Pertanian)
Jurnal Teknologi Edisi No. 4, Tahun XVII, Desember 2003 (Rak 7-N: TEKNIK)