Sinha, U. P. (2007). Economics of social sector and environment. Concept Publishing Company.
Παραπομπή Chicago StyleSinha, Udai Prakash. Economics of Social Sector and Environment. New Delhi: Concept Publishing Company, 2007.
Παραπομπή MLASinha, Udai Prakash. Economics of Social Sector and Environment. Concept Publishing Company, 2007.
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