A plenary session of the third workshop.

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On the left, Roger Gaudet, NBGIC, receives a plaque of appreciation for his contributions to the workshop. Presenting the plaque is Agrim. Hugo Arce, Vice-President of the Professional Council of Surveyors of the Province of Buenos Aires. Agrim. Pedro Gaska, on the right of the photo, is one of 10 members of the Professional Council of Surveyors of the Province of Buenos Aires.