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![Page 1: Scanned by CamScanner - saaecajueiro.com.brsaaecajueiro.com.br/abnt/ABNT NBR 9649 (1986).pdf · Projeto de redes coletoras de esgoto sanitário ABNT.Associaçäo Brasileira de Normas](https://reader034.vdocuments.pub/reader034/viewer/2022052209/5be2758c09d3f2382f8c0622/html5/thumbnails/1.jpg)
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