H. Calkins

Cartography and Geographic Information Systems at the State University of New York at Buffalo

D. Mark, H. Calkins, 1991 .

Computer Handling of Geographical Data: An Examination of Selected Geographic Information Systems

R. Tomlinson, H. Calkins, D. Marble, 1976 .

NCGIA National Center for Geographic Information and Analysis NCGIA Research Initiative 9 Institutions Sharing Geographic Information Scientific Report for the Specialist Meeting 26-29 February 1992

J. Pinto, J. Estes, H. Calkins, 1998 .

Research Initiative 4: Use and Value of Geographic Information

H. Calkins, H. Onsrud, H. J. Onsrud, 1993 .

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 Planning Monitor: An Accountability Theory of Plan Evaluation

H W Calkins, H. Calkins, 1979 .

ENTITY-RELATIONSHIP MODELING OF SPATIAL DATA FOR GEOGRAPHIC INFORMATION SYSTEMS

H. Calkins, Hugh W. Calkins, 2000 .

ACC/AHA Guideline Update for Perioperative Cardiovascular Evaluation for Noncardiac Surgery--Executive Summary. A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee to Update the 1996 Guidelines on Perioperative Cardiovascular Evaluat

E. Antman, J. Leppo, L. Fleisher, 2002, Anesthesia and analgesia.