linsel, h., & sack, k. (1965). theoretical problems of industrial planning. the institute of national planning.
Tohutoru Kātū Chicago (17th ed.)linsel, h., me k. sack. Theoretical Problems of Industrial Planning. cairo: the institute of national planning, 1965.
Tohutoro MLA (9th ed.)linsel, h., me k. sack. Theoretical Problems of Industrial Planning. the institute of national planning, 1965.
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