Hugh W. Calkins

The Transition To Automated Production Cartography: Design Of The Master Cartographic Database

Duane F. Marble, Hugh W. Calkins, 1987 .

Comment on 'Concerning "The economic evaluation of implementing a GIS'"

Hugh W. Calkins, Holly J. Dickinson, 1990, Int. J. Geogr. Inf. Sci..

An Approach for Integrating GIS and Watershed Analysis Models

Hui Lin, Joseph F. Atkinson, Paul J. Densham, 1994 .

Taxonomy for surveying the use and value of geographical information!

Nancy J. Obermeyer, Hugh W. Calkins, H. Calkins, 1991, Int. J. Geogr. Inf. Sci..

The economic evaluation of implementing a GIS

Hugh W. Calkins, Holly J. Dickinson, 1988, Int. J. Geogr. Inf. Sci..