Jirasak Charoenmit. 2001. Environmental geology of Changwat Nakhon Phanom in northeasthern Thailand. Field of Study Geology, Chulalongkorn University;
Jirasak Charoenmit. (2001) Environmental geology of Changwat Nakhon Phanom in northeasthern Thailand . Chulalongkorn University/Bangkok.
Jirasak Charoenmit. Environmental geology of Changwat Nakhon Phanom in northeasthern Thailand. . Bangkok:Chulalongkorn University, 2001.
Jirasak Charoenmit. (2001) Environmental geology of Changwat Nakhon Phanom in northeasthern Thailand . Chulalongkorn University/Bangkok.