hansen, b. (1962). output- productivity and value added- productivity. the institute of national planning.
Čikaški stil citiranja (17. izdanje)hansen, bent. Output- Productivity and Value Added- Productivity. cairo: the institute of national planning, 1962.
MLA način citiranja (9. izdanje)hansen, bent. Output- Productivity and Value Added- Productivity. the institute of national planning, 1962.
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