linsel, H., & sack, K. (1965). theoretical problems of industrial planning. National Planning Institute.
Tohutoru Kātū Chicago (17th ed.)linsel, H., me K. sack. Theoretical Problems of Industrial Planning. cairo: National Planning Institute, 1965.
Tohutoro MLA (9th ed.)linsel, H., me K. sack. Theoretical Problems of Industrial Planning. National Planning Institute, 1965.
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