1
by Huang, Philip C., 1940-
Published 1990
Subjects: ...Rural development -- China -- Yangzi River -- Delta....
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Unknown
2
by Mandala, Elias Coutinho.
Published 1990
...Shire River Valley (Malawi and Mozambique) Economic conditions....
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Unknown
3
by Roberts, Richard L., 1949-
Published 1987
...Niger River Valley Economic conditions....
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Unknown