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Somsak Anansuvanchai. 1992. Path algebras for solving some path problems. Graduate School, Chulalongkorn University;
Somsak Anansuvanchai. (1992) Path algebras for solving some path problems . Chulalongkorn University/Bangkok.
Somsak Anansuvanchai. Path algebras for solving some path problems. . Bangkok:Chulalongkorn University, 1992.
Somsak Anansuvanchai. (1992) Path algebras for solving some path problems . Chulalongkorn University/Bangkok.