Vanek, J. (1967). Estimating foreign resource needs for economic development: Theory, method and a case study of Colombia. McGraw Hill Book.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVanek, Jaroslav. Estimating Foreign Resource Needs for Economic Development: Theory, Method and a Case Study of Colombia. McGraw Hill Book, 1967.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVanek, Jaroslav. Estimating Foreign Resource Needs for Economic Development: Theory, Method and a Case Study of Colombia. McGraw Hill Book, 1967.
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