Frequencies of surface wind speeds and directions : part III : Ta nganyika and Zanzibar (including Pemba and Mafia) - Nairobi : Meteorological Department of the East African Common S ervices Organization, 1961. - 264 p. : tables ; 33 cm. Subjects--Topical Terms: Wind -- Speed -- Tanganyika. Wind -- Speed -- Zanzibar. Gov. Doc. Class. No.: G EAC M47 (08) 10 pt III