Ngā hua rapu - soil (conservation* OR consultation*)
Ngā kaupapa kua whakahuatia i roto i tō rapu.
Ngā kaupapa kua whakahuatia i roto i tō rapu.
- Soil conservation 86
- Soil erosion 25
- Soils 14
- Water conservation 14
- Land use 11
- Soil management 9
- Sustainable agriculture 7
- Land use, Rural 6
- Soil degradation 6
- Soil fertility 6
- Soil science 6
- Agricultural conservation 5
- Agriculture 5
- Planning 5
- Research 5
- Government policy 4
- Organic fertilizers 4
- Plants 4
- Watershed management 4
- Agricultural ecology 3
- Agricultural engineering 3
- Agricultural systems 3
- Analysis 3
- Classification 3
- Conservation tillage 3
- Environmental aspects 3
- Fertilizers 3
- Handbooks, manuals, etc 3
- Hydraulic engineering 3
- Management 3
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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
Soilerosion by water : some measures for its control on cultivated lands
I whakaputaina 1965Pukapuka -
27
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28
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29
Erosion control ... protecting our future : proceedings of Conference XVII, International Erosion Control Association February 27 & 28, 1986, Dallas, Texas.
I whakaputaina 1986Conference Proceeding Pukapuka -
30
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31
A study of the reasons for success or failure of soil conservation projects /
I whakaputaina 1991Pukapuka -
32
International Symposium on Water Erosion, Sedimentation and Resource Conservation, October 9-13, 1990, Dehradun, India.
I whakaputaina 1990Conference Proceeding Pukapuka -
33
Soil and water conservation for productivity and environmental protection
I whakaputaina 1980Pukapuka -
34
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35
1986 Soil Conservation Conference, Macquarie University, 16th, 17th July.
Conference Proceeding Pukapuka -
36
Compilation of papers : Soils Workshop for Agronomists, Horticulturalists and Soil Conservationists, 4-5 May, 1988, Alstonville.
I whakaputaina 1988Conference Proceeding Pukapuka -
37
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38
Soil and plant testing and analysis report of an expert consultation held in Rome, 13-17 June 1977
I whakaputaina 1980Pukapuka -
39
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40