1.
GIS for Surveyors : A Guide to Geographic Information Systems for Land Surveyors
by Zimmer, Rj
ISBN: 9780988873735
List Price: $67.30
2.
GCDB Handbook: Using the Geographic Coordinate Database as a Resource in a Geographic Inform...
by Rj Zimmer
ISBN: 9780988873711
List Price: $24.99