1
Advances in agronomy . 145 /
Book
...LWE - Agriculture - general aspects...
Table of Contents 
2
Advances in agronomy . 146 /
Book
...LWE - Agriculture - general aspects...
Table of Contents 
3
World agriculture : towards 2010 : an FAO study /
Book
...LWE - Agriculture - general aspects...
4
Agricultural ecology : an analysis of world food production systems /
Book
...LWE - Agriculture - general aspects...