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"QPF A versatile query language for a knowledge-based geographical ..."

Jian-Kang Wu, Tao Chen, Li Yang (1989)

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DOI: 10.1080/02693798908941495

access: closed

type: Journal Article

metadata version: 2020-05-12

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Jian-Kang Wu, Tao Chen, Li Yang:
QPF A versatile query language for a knowledge-based geographical information system. Int. J. Geogr. Inf. Sci. 3(1): 51-57 (1989)

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