By Christensen Albert H J   in The Cartographic Journal

ISSN:1743-2774|45|1|68-78

Maney Publishing‎(2008)‎

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By Christensen Albert H. J.   in Cartography and Geographic Information Science

ISSN:1545-0465|26|1|19-32

Cartography and Geographic Information Society‎(1999)‎

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By Christensen Albert H. J.   in The Cartographic Journal

ISSN:1743-2774|37|1|19-28

Maney Publishing‎(2000)‎

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By Christensen Albert H. J.   in The Cartographic Journal

ISSN:1743-2774|36|1|31-41

Maney Publishing‎(1999)‎

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By Christensen Albert H.J.   in Cartography and Geographic Information Science

ISSN:1545-0465|19|2|88-100

Cartography and Geographic Information Society‎(1992)‎

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