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1 ene 1982 año - Tomlinson estimates that there were over 1000 different GIS systems in use across the US.

Descripción:

(Coppock and Rhind, 1991)

Añadido al timeline:

GIS_TIMELINE

22 sep 2017

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1060

fecha:

1 ene 1982 año

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~ 43 years ago

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