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1.
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The determination of the correlation between the various factors which influence the evaporation and transpiration of water out of sand beds : Project report No. 1 2 / Dieter H. R. Hellwig by
Material type: Text Text
Language: English
Publication details: Pretoria : CS I R, 1966
Availability: Items available for reference: Namibia Scientific Society Library: Not for loan (1).
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2.
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Evaporation and transpiration of water out of various sand beds and its influence on water quality : Projest Report No.10 / Dieter H. R. Hellwig by
Material type: Text Text
Language: English
Publication details: Pretoria : CS I R, 1975
Availability: Items available for reference: Namibia Scientific Society Library: Not for loan (1).
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Evaporation and transpiration of water out of various sand beds and its influence on water quality : Project Report No.111 / Dieter H. R. Hellwig by
Material type: Text Text
Language: English
Publication details: Pretoria : CS I R, 1976
Availability: Items available for reference: Namibia Scientific Society Library: Not for loan (1).
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