«Defluoridation of drinking water by using magnesia and polyaluminium chloride»
, vol. no. 48. Tampere University of Technology, Institute of Water and Environmental Engineeri, Tampere, Finland, p. 77 p.: 14 fig., 38 tab., 1991.
«Drumstick seed as a coagulant»
, in Infrastructure for low-income communities : proceedings of the 16th WEDC conference : Regional Centre for Urban and Environmental Studies (RCUES), Osmania University, Hyderabad, India, 27-31 August, 1990
, 1991, pp. P. 131-134: 1 fig., 2 tab.
«Use of Indonesian flocculating soil in water treatment»
, Water supply : the review journal of the International Water Supply Association
, pp. p. S95-S101: 6 fig., 5 tab., 1991.