By Ellehoj Erik A.   Coulson Michael R.C.   in Cartography and Geographic Information Science

ISSN:1545-0465|17|3|225-235

Cartography and Geographic Information Society‎(1990)‎

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By Mak Katherine   Coulson Michael R.C.   in Cartography and Geographic Information Science

ISSN:1545-0465|18|2|109-124

Cartography and Geographic Information Society‎(1991)‎

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By Mackay Yarnal Careen M.   Coulson Michael R. C.   in The Cartographic Journal

ISSN:1743-2774|19|1|16-27

Maney Publishing‎(1982)‎

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