Callan, S. J., & Scott J. Callan; Janet M. Thomas. Environmental economics & management: Theory, policy, and applications. Mason, OH: Thomson/South-Western.
शिकागो स्टाइल उद्धरणCallan, Scott J., और Scott J. Callan; Janet M. Thomas. Environmental Economics & Management: Theory, Policy, and Applications. Mason, OH: Thomson/South-Western.
एमएलए उद्धरणCallan, Scott J., और Scott J. Callan; Janet M. Thomas. Environmental Economics & Management: Theory, Policy, and Applications. Mason, OH: Thomson/South-Western.
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