Chowdhury, P. N. (1973). Economics of research & development. People's Pub. House.
Chicago-viite (17. p.)Chowdhury, P. N. Economics of Research & Development. New Delhi: People's Pub. House, 1973.
MLA-viite (8. p.)Chowdhury, P. N. Economics of Research & Development. People's Pub. House, 1973.
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