Ngā hua rapu - ((water conservation) OR (water consultation))
Ngā kaupapa kua whakahuatia i roto i tō rapu.
Ngā kaupapa kua whakahuatia i roto i tō rapu.
- Water conservation 30
- Soil conservation 20
- Irrigation 6
- Water 6
- Energy conservation 5
- Soil erosion 5
- Soils 5
- Plants 4
- Watershed management 4
- Agricultural engineering 3
- Hydraulic engineering 3
- Management 3
- Natural resources 3
- Organic fertilizers 3
- Purification 3
- Water resources development 3
- Analysis 2
- Conservation of natural resources 2
- Design and construction 2
- Drainage 2
- Environmental aspects 2
- Fertilizers 2
- Hydrological stations 2
- Irrigation engineering 2
- Land use 2
- Landscape gardening 2
- Organic wastes 2
- Organic wastes as fertilizers 2
- Papua New Guinea. Department of Environment & Conservation 2
- Pollution 2
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21
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22
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23
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24
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25
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26
The water efficient garden : a practical and innovative guide from planning through to established gardens /
I whakaputaina 1993Ngā marau: “…Landscape gardening Water conservation Australia.…”
Pukapuka -
27
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28
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29
Soil and water conservation for productivity and environmental protection
I whakaputaina 1980Ngā marau:Pukapuka -
30
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31
Farmers' practices and soil and water conservation programs /
I whakaputaina 1991Ngā marau:Conference Proceeding Pukapuka -
32
Rain catchment and water supply in rural Africa a manual
I whakaputaina 1982Ngā marau: “…Water conservation Africa…”
Pukapuka -
33
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34
Proceedings of the national workshop on Urban Water Demand Management, Alexander Library, Perth Cultural Centre, April 29 - May 1, 1986 /
I whakaputaina 1987Ngā marau:Pukapuka -
35
Earth, air, and water : resources and environment in the late 20th century /
I whakaputaina 1991Pukapuka -
36
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37
Land use and water resources in temperate and tropical climates
I whakaputaina 1973Ngā marau:Pukapuka -
38
Guidelines for economic appraisal of watershed managementprojects /
I whakaputaina 1987Ngā marau:Pukapuka -
39
Watershed management field manual : slope treatment measures and practices.
I whakaputaina 1988Ngā marau:Pukapuka -
40