00836nam a2200205Ia 4500 CTU_107150 210402s9999 xx 000 0 und d 661.804 T159 Tamura, Shuji Economies of scale and technological progress of the Japanese petrochemical industry and their implications for development planning : A dissertation submitted to the department of economics and the comitte on graduate studies of stanford university in partial fulfillment of the requirements for the degree of dotor of philosophy Shuji Tamura London University Microfilms International 1979 Petroleum chemicals industry Japan Truc Trung tâm Học liệu Trường Đại học Cần Thơ