B. Cave and Curtis, V.,
“Effectiveness of promotional techniques in environmental health”, vol. no. 165. Water and Environmental Health at London and Loughborough (WELL), London, UK, p. 22 p. : 5 boxes, tab., 1999.
P. Kolsky and Cave, B.,
“Groundwater, latrines and health”, vol. no. 163. Water and Environmental Health at London and Loughborough (WELL), London, UK, p. viii, 29 p. : 6 boxes, 4 fig., 9 tab., 1999.
