Visi 2 Daniel Sui izlaidumi pie Paperback Book un Ha... Book
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![Cover for Daniel Sui · Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice (Paperback Book) [2013 edition] (2014)](https://imusic.b-cdn.net/images/item/original/267/9789400798267.jpg?daniel-sui-2014-crowdsourcing-geographic-knowledge-volunteered-geographic-information-vgi-in-theory-and-practice-paperback-book&class=scaled&v=1612626761)
![Cover for Daniel Sui · Crowdsourcing Geographic Knowledge: Volunteered Geographic Information (VGI) in Theory and Practice (Hardcover Book) [2013 edition] (2012)](https://imusic.b-cdn.net/images/item/original/865/9789400745865.jpg?daniel-sui-2012-crowdsourcing-geographic-knowledge-volunteered-geographic-information-vgi-in-theory-and-practice-hardcover-book&class=scaled&v=1612626761)