|
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 |
|
|
45 |
Organic materials and soil productivity in the Near East, 1982 |
1982 |
Report |
|
|
43 |
Organic recycling in Africa, 1980 |
1980 |
Report |
|
|
42 |
Soil survey investigations for irrigation, 1979 |
1979 |
Report |
|
|
41 |
China: azolla propagation and small-scale biogas technology, 1978 |
1978 |
Report |
|
|
|