📕 Source : WEDC © - TB.003-Cleaning and disinfecting water storage tanks and tankers. // 2013 // 4 pages.

https://wedc-knowledge.lboro.ac.uk/resources/who_notes/WHO_TNE_03_Cleaning_and_disinfecting_water_storage_tanks_and_tankers.pdf

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https://app.box.com/s/jnr2ib1i9owp8lie663uaqfv4mx1benl

Source : WEDC© // Release year — 2013.