Maintaining the system : barefoot engineers : case history no. 4.
1983
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详细记录
符号***
标题Maintaining the system : barefoot engineers : case history no. 4.
索书号
UNDP(05)/W2
包含
International Drinking Water Supply and Sanitation Decade (1981-1990)
日期New York : UN, [1983]
描述
6 p. : ill.
备注
At head of title: International Drinking Water Supply and Sanitation Decade.