A methodology for on-farm cropping systems research /
Zandstra, H. G. et al.
A methodology for on-farm cropping systems research / H. G. Zandstra, E. C. Price, J. A. Litsinger and R. A. Morris. - Manila : The International Rice Research Institute, 1981. - vii, 147 p. ; 23 cm.
Includes bibliography.
Open access.
Agricultural systems.
Cropping systems.
Agricultural systems.
A methodology for on-farm cropping systems research / H. G. Zandstra, E. C. Price, J. A. Litsinger and R. A. Morris. - Manila : The International Rice Research Institute, 1981. - vii, 147 p. ; 23 cm.
Includes bibliography.
Open access.
Agricultural systems.
Cropping systems.
Agricultural systems.