📕 Source : OXFAM© -TB-Spring protection.

     **[<https://www.oxfamwash.org/water/spring-protection/TB5> Spring Protection.pdf](<https://www.oxfamwash.org/water/spring-protection/TB5%20Spring%20Protection.pdf>)**

https://www.oxfamwash.org/water/spring-protection/TB5 Spring Protection.pdf

Source : OXFAM©