Collart, Alphonse Handbook of family and small scale monosex nile tilapia farming in tropical Africa Alphonse Collart - Wierde Tilapia International Association Belguim 1997 - ii,93p. ill. 30cm. Subjects--Topical Terms: TilapiaZoology, Monosex Nile tilapia, Tropical Africa LC Class. No.: ZOO QL638.T55C6