Martin, D. (1991). Geographic information systems and their socioeconomic applications. Routledge.
Tohutoru Kātū Chicago (17th ed.)Martin, David. Geographic Information Systems and Their Socioeconomic Applications. London ; New York: Routledge, 1991.
Tohutoro MLA (9th ed.)Martin, David. Geographic Information Systems and Their Socioeconomic Applications. Routledge, 1991.
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