Liquid pumps and installation - General terms, definitions, quantities, letter symbols and units - Part 2: Pumping System (ISO 17769-2:2012); Trilingual version EN ISO 17769-2:2012— 31 стр.
Liquid pumps and installation - General terms - Definitions, quantities, letter symbols and units - Part 2: Pumping system (ISO/DIS 17769-2:2010); German version prEN ISO 17769-2:2010