Somchoke Kala. 2004. Selection of TnAraOut mutants from nitrogen-fixing and heat tolerant Sinorhizobium fredii S174. Field of Study Industrial Microbiology, Chulalongkorn University;
Somchoke Kala. (2004) Selection of TnAraOut mutants from nitrogen-fixing and heat tolerant Sinorhizobium fredii S174 . Chulalongkorn University/Bangkok.
Somchoke Kala. Selection of TnAraOut mutants from nitrogen-fixing and heat tolerant Sinorhizobium fredii S174. . Bangkok:Chulalongkorn University, 2004.
Somchoke Kala. (2004) Selection of TnAraOut mutants from nitrogen-fixing and heat tolerant Sinorhizobium fredii S174 . Chulalongkorn University/Bangkok.