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• pl: Projektowanie instalacji wodociągowych w układzie pierścieniowym
• de-at: Designing sanitary system loop installations
• bs: Designing sanitary system loop installations
• bg: Проектиране на сключена водоснабдителна инсталация
• zh-cn: 环路给水系统的设计
• cs: Designing sanitary system loop installations
• da: Designing sanitary system loop installations
• et: Designing sanitary system loop installations
• es: Designing sanitary system loop installations
• fi: Designing sanitary system loop installations
• fr: Designing sanitary system loop installations
• ru: Designing sanitary system loop installations