By Zeigler Donald J.   in Journal of Geography

ISSN:0022-1341|112|3|131-132

Routledge Ltd‎(2013)‎

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By Zeigler Donald J.   in Imago Mundi: The International Journal for the History of Cartography

ISSN:0308-5694|65|1|124-125

Routledge Ltd‎(2013)‎

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By Zeigler Donald J.   in Cartography and Geographic Information Science

ISSN:1545-0465|15|4|357-362

Cartography and Geographic Information Society‎(1988)‎

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