Agusan

Agusan (ägOO'sän) , river, c.240 mi (390 km) long, rising in the mountains of SE Mindanao, the Philippines, and flowing N past Butuan to Butuan Bay. It is navigable for small craft c.160 mi (260 km) upstream. The Agusan valley is very fertile and is one of the chief rice-growing region...
Found on http://www.infoplease.com/ce6/world/A0802790.html
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