Variability and growth in grain yields, 1950-94 : does the record point to greater instability
Naylor, R.
Variability and growth in grain yields, 1950-94 : does the record point to greater instability - 18 p.
tbls., gráfs.
Crecimiento Demografico
Alimentos
Rendimiento de la Cosecha
Teoria de la Población
Variability and growth in grain yields, 1950-94 : does the record point to greater instability - 18 p.
tbls., gráfs.
Crecimiento Demografico
Alimentos
Rendimiento de la Cosecha
Teoria de la Población