Duala, which is known as Douala in French, is a Bantu language spoken in Cameroon by about 87,700 people.
Duala first appeared in writing in 1862 in a translation of the Bible. The orthography was reformed in 1932, and again in 1979 when a common alphabet for the languages of Cameroon (Alphabet Général des Langues Cameroun-aises) was created.
Duala has three tones: a high tone which is marked by by an acute accent; a low tone which is unmarked, and a falling-rising tone which marked by a caron (ˇ). These accents are not always written.
Information about the Duala language
http://www.studentsoftheworld.info/sites/divers/584.php
http://en.wikipedia.org/wiki/Duala_language
http://fr.dooh.org
Duala - French dictionary
http://philippe.litou.free.fr/duala/dico%20franco-duala.htm
Bemba, Chichewa, Duala, Ewondo, Ganda/Luganda, Herero, Kinyarwanda, Kirundi, Lingala, Loma, Mandekan, Mende, Ndebele, Northern Sotho, OshiWambo, Shona, Southern Sotho, Swahili, Swati, Tshiluba, Tsonga, Tswana, Tumbuka, Venda, Xhosa, Zulu
Other languages written with the Latin alphabet