APA aipamena

Worrall, L. (1990). Geographic information systems: Developments and applications. Belhaven Press.

Chicago Style aipamena

Worrall, Les. Geographic Information Systems: Developments and Applications. London ; New York: Belhaven Press, 1990.

MLA aipamena

Worrall, Les. Geographic Information Systems: Developments and Applications. Belhaven Press, 1990.

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