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DIN EN 12831-3/A1:2021-04

Проект
Energy performance of buildings - Method for calculation of the design heat load - Part 3: Domestic hot water systems heat load and characterisation of needs, Module M8-2, M8-3; German and English version EN 12831-3:2017/prA1:2021
DIN EN 12831-3/A1:2021-04
Проект