00343nam a22001097a 4500020001800000082001300018100001200031245007400043260003700117300001500154504006400169  a9781835350874  a621.3678  aDouglas  aStudy of geographic information systems and remote sensing /cDouglas  aLondon :bED tech press,cc.2024  ax, 338p. ;  aIncludes bibliographical references (p. 329-332 ) and index