Stockholm International Water Institute -Stockholm, SE, SIWI,
“Water harvesting : workshop 4B, Stockholm water symposium, August 10 - 13, 1998”, vol. no. 2. Stockholm International Water Institute (SIWI), Stockholm, Sweden, p. 46 p. : fig., tab., 1998.
Stockholm International Water Institute -Stockholm, SE, SIWI,
“Water - the key to socio-economic development and quality of life : the 8th Stockholm Water Symposium, August 10 - 13, 1998 : proceedings”. Stockholm International Water Institute (SIWI), Stockholm, Sweden, p. 267 p. : fig., tab., 1998.