A methodology for on-farm cropping systems research
Sandstra, H. G.
A methodology for on-farm cropping systems research - Manila : International Rice Research Institute, 1981 - 147 p. : ilus.
55973
Agricultura--Investigacion--Asia.
Sistemas de cultivo.
631.5 / Z3
A methodology for on-farm cropping systems research - Manila : International Rice Research Institute, 1981 - 147 p. : ilus.
55973
Agricultura--Investigacion--Asia.
Sistemas de cultivo.
631.5 / Z3
