@PROCEEDINGS {MUTSAERS:1991d, title = {On-farm research in theory and practice: proceedings of a workshop on design and analysis of on-farm trials 27 February to 3 March 1989}, author = {Mutsaers, H. J. W. and Walker, P. }, booktitle = {In: proceedings of a workshop on design and analysis of on-farm trials 27 February to 3 March 1989}, year = {1991}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, isbn = {978-131-064-2}, note = {204p.}, }