Onsrud, H. J. (2007). Research and theory in advancing spatial data infrastructure concepts. Redlands, CA: ESRI Press.
Παραπομπή Chicago StyleOnsrud, Harlan Joseph. Research and Theory in Advancing Spatial Data Infrastructure Concepts. Redlands, CA: ESRI Press, 2007.
Παραπομπή MLAOnsrud, Harlan Joseph. Research and Theory in Advancing Spatial Data Infrastructure Concepts. Redlands, CA: ESRI Press, 2007.
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