Savornin Lohman, M. de

Mooijman, A., M. Lohman, deSavornin & Franklyn, N., 1988. Evaluation on the Sarvodaya SL-5 handpump : Matara and Galle district, Moratuwa, Sri Lanka: Sarvodaya Rural Technical Services. Available at: https://fr.ircwash.org/sites/default/files/232.2-7008.pdf.