|
55 |
Guidelines: land evaluation for irrigated agriculture, 1989 |
1989 |
Report |
|
|
54 |
Tillage systems for soil and water conservation, 1984 |
1984 |
Report |
|
|
53 |
Improved production systems as an alternative to shifting cultivation, 1984 |
1984 |
Report |
|
|
52 |
Guidelines: land evaluation for rainfed agriculture, 1988 |
1988 |
Report |
|
|
51 |
El reciclaje de materias orgánicas en la agricultura de América Latina, 1983 |
1983 |
Report |
|
|
50 |
Keeping the land alive: soil erosion - its causes and cures, 1983 |
1983 |
Report |
|
|
49 |
Application of nitrogen-fixing systems in soil management, 1982 |
1982 |
Report |
|
|
48 |
Micronutrients and the nutrient status of soils: a global study, 1982 |
1982 |
Report |
|
|
47 |
Le recyclage des résidus agricoles organiques en Afrique, 1982 |
1982 |
Report |
|
|
46 |
Blue-green algae for rice production + a manual for its promotion, 1981 |
1981 |
Report |
|
|
|