@INBOOK {NEUENSCHWANDER:2001a, title = {Biological control in Africa and its possible effects on biodiversity}, author = {Neuenschwander, P. and Markham, R. }, editor = {Wajnberg, E, and Scott, J. and Quimby, P. }, year = {2001}, type = {Evaluating indirect ecological effects of biological control}, pages = {127--146}, publisher = {CABI}, address = {Wallingford, UK}, isbn = {0-85199-453-9}, }