004940000a22001690004500 PH-MaWHO 20241108112059.0 Arlosoroff S, Grey D, Journey W. 642671 Handpumps testing and development : progress report on field and laboratory testing. Washington, D.C. : World Bank, 1984. (World Bank technical paper ; no. 29) 399p. SEQ 1984 eng Water supply 360161 MONO 507 507 0 0 0 0 WPRO WPRO 2021-05-23 0 SEQ 1984 00507 2024-01-24 00:00:00 2021-05-23 MONO