Ewing, D. W. (1973). Science policy and business: The changing relation of Europe and the United States. Boston: Harvard University.
शिकागो स्टाइल उद्धरणEwing, David W. Science Policy and Business: The Changing Relation of Europe and the United States. Boston: Harvard University, 1973.
एमएलए उद्धरणEwing, David W. Science Policy and Business: The Changing Relation of Europe and the United States. Boston: Harvard University, 1973.
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