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Message * New Technology for Mapping [Proceedings] International Symposium, Commission Iv : Ottawa, Canada, October 2-6, 1978 = Les ProgreĢs De La Technologie Cartographique : [Comptes Rendus] Symposium International, Commission Iv : Ottawa, Canada, October [I.E. Octobre] 2-6, 1978 - 0919088058 - 9780919088054