nasr el- din, y. (1970). the transportation problem on the 1620 digital computer. the institute of national planning.
Tohutoru Kātū Chicago (17th ed.)nasr el- din, yousif. The Transportation Problem on the 1620 Digital Computer. cairo: the institute of national planning, 1970.
Tohutoro MLA (9th ed.)nasr el- din, yousif. The Transportation Problem on the 1620 Digital Computer. the institute of national planning, 1970.
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