Tussaneewan Singho และ Boonrod Sajjakulnukit. (2014) Experimental testing of palm kernel shell in multi-stage air gasification. King mongkut’s university of technology thonburi:ม.ป.ท.Tussaneewan Singho และ Boonrod Sajjakulnukit. 2014. Experimental testing of palm kernel shell in multi-stage air gasification. ม.ป.ท.:King mongkut’s university of technology thonburi;Tussaneewan Singho และ Boonrod Sajjakulnukit. Experimental testing of palm kernel shell in multi-stage air gasification. ม.ป.ท.:King mongkut’s university of technology thonburi, 2014. Print.