|
37 |
Improved use of plant nutrients, 1978 |
1978 |
Report |
|
|
35 |
Organic materials and soil productivity, 1977 |
1977 |
Report |
|
|
34 |
Assessing soil degradation, 1977 |
1977 |
Report |
|
|
33 |
Soil conservation and management in developing countries, 1977 |
1977 |
Report |
|
|
32 |
A framework for land evaluation, 1976 |
1976 |
Report |
|
|
31 |
Prognosis of salinity and alkalinity, 1976 |
1976 |
Report |
|
|
30 |
Soil conservation for developing countries, 1976 |
1976 |
Report |
|
|
29 |
Land evaluation in Europe, 1975 |
1975 |
Report |
|
|
28 |
S.I. Units and nomenclature in soil science, 1975 |
1975 |
Report |
|
|
27 |
Organic materials as fertilizers, 1975 |
1975 |
Report |
|
|
|