Kết quả tìm kiếm - (( soil conservation ) OR ( soil construction ))
Chủ đề được đề xuất trong tìm kiếm của bạn.
Chủ đề được đề xuất trong tìm kiếm của bạn.
- Soil conservation 86
- Soil erosion 26
- Soils 16
- Water conservation 14
- Soil mechanics 13
- Foundations 11
- Land use 10
- Soil management 9
- Design and construction 7
- Soil degradation 7
- Sustainable agriculture 7
- Land use, Rural 6
- Soil fertility 6
- Soil science 6
- Agricultural conservation 5
- Agriculture 5
- Research 5
- Roads 5
- Soil stabilization 5
- Building 4
- Government policy 4
- Management 4
- Organic fertilizers 4
- Planning 4
- Plants 4
- Testing 4
- Watershed management 4
- Agricultural ecology 3
- Agricultural engineering 3
- Agricultural systems 3
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141
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142
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143
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144
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145
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146
Slope stability problems on the Dreikikir to Wasisi road, East Sepik District /
Được phát hành 1972Những chủ đề: “…Slopes (Soil mechanics) Papua New Guinea.…”
Sách -
147
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148
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149
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150
FAO farm systems management series.
Được phát hành 1994Mục lục: “…Farm systems development and soil conservation /…”
Sách -
151
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152
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153
FAO land and water bulletin /
Được phát hành 1995Mục lục: “…. - No. 8. Manual on integrated soil management & conservation practices.…”
Sách -
154
FAO systems management series.
Được phát hành 1993Mục lục: “…. -- Farming systems development and soil conservation /David Norman and Malcolm Douglas. -- Farming systems approach to development and appropriate technology generation /D.W. …”
Sách -
155
Worldwatch progress report--1984 an assessment of world efforts to creat a sustainable society
Được phát hành 1984Mục lục: “…Brown -- Reducing dependence on oil / by Lester R. Brown -- Conserving soils / by Lester R. Brown -- Protecting forests / by Sandra Postel -- Recycling materials / by William U. …”
Sách -
156