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Invariant practical tasks for work with graphics images at the secondary school - PDF (Russian)
Copyright (c) 2014 Карташова Л.И., Левченко И.В., Павлова А.Е.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2014 Карташова Л.И., Левченко И.В., Павлова А.Е.
This work is licensed under a Creative Commons Attribution 4.0 International License.