|
74 |
Guidelines for quality management in soil and plant laboratories, 1998 |
1998 |
Report |
|
|
73 |
Agro-ecological zoning - guidelines, 1996 |
1996 |
Report |
|
|
73 |
Agro-ecological zoning - guidelines, 1997 |
1996 |
Report |
|
|
73 |
Agro-ecological zoning - guidelines, 1997 |
1997 |
Report |
|
|
72 |
Sustainable dryland cropping in relation to soil productivity, 1995 |
1995 |
Report |
|
|
70 |
Land husbandry: components and strategy, 1994 |
1994 |
Report |
|
|
70 |
Land husbandry: components and strategy, 1996 |
1996 |
Report |
|
|
69 |
Soil tillage in Africa: needs and challenges, 1993 |
1993 |
Report |
|
|
68 |
Field measurement of soil erosion and runoff, 1993 |
1993 |
Report |
|
|
68 |
Field measurement of soil erosion and runoff, 1997 |
1997 |
Report |
|
|
|