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грн55.00 -10% Off грн49.50
The textbook “A Brief Guide to the Extraction and Purification of Water in Natural Conditions” discusses issues related to water deficiencies in the human bo...
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грн55.00 -10% Off грн49.50
The tutorial covers such issues as determining the scale of the map and the sides of the horizon, orienting by sound and light, and features of determining l...