The planning stage of on-farm research :
Tripp, Robert.
The planning stage of on-farm research : identifying factors for experimentation / Robert Tripp and Jonathan Woolley. - Mexico, D.F. : Cali, Colombia : CIMMYT ; CIAT, 1989. - vi, 85 p. : ill. (some col.) ; 26 cm.
Includes bibliographical references (p. 84-85)
968612702X
90136603
Agriculture--Research--On-farm--Planning.
S540.O53 / T74 1989
630/.72
The planning stage of on-farm research : identifying factors for experimentation / Robert Tripp and Jonathan Woolley. - Mexico, D.F. : Cali, Colombia : CIMMYT ; CIAT, 1989. - vi, 85 p. : ill. (some col.) ; 26 cm.
Includes bibliographical references (p. 84-85)
968612702X
90136603
Agriculture--Research--On-farm--Planning.
S540.O53 / T74 1989
630/.72