CHOWDHURI, P. (1973). Economics of research and development. People's Pub.
Chicago-čujuhus (17. p.)CHOWDHURI, P.N. Economics of Research and Development. New Delhi: People's Pub, 1973.
MLA-čujuhus (9. p.)CHOWDHURI, P.N. Economics of Research and Development. People's Pub, 1973.
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