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report prepared by Twatchai Yongkittikul...[et al.]
The National Institute of Development Administration 1979
Available at 1 libraries
Twatchai Yongkittikul
Institute of Developing Economies 1978 V.R.F. series no. 56 , 所内資料海外業務室 no. 52-8
Available at 7 libraries
by Twatchai Yongkittikul
University Microfilms [1973]