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Liberia : rural roads / by Richard Cobb...[et al.].
- US. Agency for international development,
- 1980.
- Washington, DC :
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The potable water project in rural Thailand / by Daniel M. Dworkin and Barbara L.K. Pillsbury ; with the ass. of Thira Thatsanatheb and Surindr Satchakul.
- US. Agency for international development,
- 1980.
- Washington, DC :
-
Korean irrigation / by David I. Steinberg...[et al.].
- US. Agency for international development,
- 1980.
- Washington, DC :