Dyfyniad APA

Bolstad, P. GIS fundamentals: A first text on geographic information systems (4a ed.).

Dyfyniad Arddull Chicago

Bolstad, Paul. GIS Fundamentals: A First Text on Geographic Information Systems. 4a ed.

Dyfyniad MLA

Bolstad, Paul. GIS Fundamentals: A First Text on Geographic Information Systems. 4a ed.

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