Variability in grain yields : implications for agricultural research and policy in developing countries
Anderson, Jock R.
Variability in grain yields : implications for agricultural research and policy in developing countries - s.l. Johns Hopkins University - International Food Policy Research Institute, s.f.
338.1 545var
Variability in grain yields : implications for agricultural research and policy in developing countries - s.l. Johns Hopkins University - International Food Policy Research Institute, s.f.
338.1 545var