On-farm research in theory and practice; proceedings On-farm research in theory and practice; proceedings

by Mutsaers, Henk J.W. 97770, 130373 Walker, P. eds., 10742 IITA, Ibadán (Nigeria), Workshop on Design and Analysis of On-Farm Trials Ibadán (Nigeria) 27 Feb - 3 Mar 1989
Published 1991