De Cock, 2001. In: Cactus (Opuntia spp.) as Forage. Mondragon-Jacobo and Perez-Gonzalez Ed., FAO Plant production and protection papers N°169: 161p. FAO, Rome

De Cock, G. C., 2001. The use of Opuntia as a fodder source in arid areas of Southern Africa. In: Cactus (Opuntia spp.) as Forage. Mondragon-Jacobo and Perez-Gonzalez Ed., FAO Plant production and protection papers N°169: 161p. FAO, Rome