TY - BOOK AU - Duprez,Colette AU - Kirschen,Etienne Sadi TI - Megistos; a world income and trade model for the 1975 SN - 044410030X(AmericanElsevier AV - HF1007 .D83 1970 PY - 1970///] CY - Amsterdam, New York PB - North-Holland Pub. Co., American Elsevier KW - Commerce KW - Mathematical models KW - Economic development N1 - "List of countries belonging to each zone": fold. leaf inserted ER -