Government-united States--us Fish & Wildlife Service, Clarence Cannon National Wildlife Refuge Great Rive Clarksville, MO 63336 Phone : (573) 847-2333 Business Category Government Offices-Federal Government Offices & Public Schools U S Government--fish & Wildlife Service 37599 Pike 206 Clarksville, MO 63336 Phone : (573) 847-2333 Business Category Government Offices & Public Schools Us Fish & Wildlife Service 37599 Pike 206 Annada, MO 63330 Phone : (573) 847-2333 Business Category Land Mineral Wildlife & Forest Conservation