@ARTICLE {DOUTHWAITE:2002d, title = {The adoption of alley farming and Mucuna: lesson for research, development, and extension}, author = {Douthwaite, B. and Manyong, V. and Keatinge, J. and Chianu, J. }, journal = {Agroforestry Systems}, year = {2002}, volume = {56}, pages = {193--202}, }