Ngā hua rapu - (water OR walter) (construction OR conservation )*
Ngā kaupapa kua whakahuatia i roto i tō rapu.
Ngā kaupapa kua whakahuatia i roto i tō rapu.
- Design and construction 34
- Water conservation 30
- Soil conservation 20
- Water 8
- Energy conservation 7
- Water-supply 6
- Handbooks, manuals, etc 5
- Management 5
- Purification 5
- Soil erosion 5
- Soils 5
- Environmental aspects 4
- Hydraulic engineering 4
- Natural resources 4
- Sewage disposal plants 4
- Water resources development 4
- Watershed management 4
- Agricultural engineering 3
- Concrete 3
- Concrete construction 3
- Construction industry 3
- Hydraulic structures 3
- Hydroelectric power plants 3
- Irrigation 3
- Organic fertilizers 3
- Plants 3
- Prestressed concrete construction 3
- Recycling 3
- Storm sewers 3
- Sustainable agriculture 3
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1
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2
Conserving water : the untapped alternative /
I whakaputaina 1985Ngā marau: “…Water conservation…”
Pukapuka -
3
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4
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5
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6
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7
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8
Vanishing land and water : soil and water conservation in dry lands /
I whakaputaina 1988Ngā marau:Pukapuka -
9
Soilerosion by water : some measures for its control on cultivated lands
I whakaputaina 1965Pukapuka -
10
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11
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12
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13
In-service training for soil and water conservation : report of the Workshop in Serdang, Malaysia, 11-15 December, 1989.
I whakaputaina 1989Ngā marau:Conference Proceeding Pukapuka -
14
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15
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16
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17
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18
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19
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20