Charn Kulpatnirun. 1997. Tariff reduction and productivity growth in electrical products : the case study of NSO's surveyed firms in ThailandCharn Kulpatnirun. Faculty of Economics, Thammasat University;
Charn Kulpatnirun. (1997) Tariff reduction and productivity growth in electrical products : the case study of NSO's surveyed firms in ThailandCharn Kulpatnirun . Thammasat University/Bangkok.
Charn Kulpatnirun. Tariff reduction and productivity growth in electrical products : the case study of NSO's surveyed firms in ThailandCharn Kulpatnirun. . Bangkok:Thammasat University, 1997.
Charn Kulpatnirun. (1997) Tariff reduction and productivity growth in electrical products : the case study of NSO's surveyed firms in ThailandCharn Kulpatnirun . Thammasat University/Bangkok.