IN view of the numerous text-books dealing with the purification of sewage which have recently appeared it would seem difficult to justify the publication of a further work on the subject. During the ...
ONTARIO, CA — The International Association of Plumbing and Mechanical Officials (IAPMO ®) has published IAPMO/UPC/Appendix H-2021, Private Sewage Disposal Systems, as a standalone document. This ...
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