[SOCIO-ECONOMIC ASPECTS OF THE DRAWING-UP OF STANDARDS FOR THE DESIGN OF WATER SUPPLY SYSTEMS].
D004467:Economics; D009656:North America; D012015:Reference Standards; D012498:Sanitary Engineering; D012924:Social Conditions; D013020:South America; D014881:Water Supply
ECONOMICS; NORTH AMERICA; SANITARY ENGINEERING; SOCIAL CONDITIONS; SOUTH AMERICA; WATER SUPPLY