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Browsing by Subject "Environmental aspects"

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Leaf green-up in a semi-arid African savanna - separating tree and grass responses to environmental cues

Author: Archibald, S ; Scholes, RJ Date: 2007 The savannas of Africa are dominated by deciduous trees and perennial but seasonal grasses. Virtually nothing is known about the factors that trigger the onset of greening, or the time-course of leaf-drop in either of these main plant functional ... Read more
Towards appropriate standards for rural roads: discussion document

Author: van Zyl, GD ; Jordaan, PW ; Bofinger, HE ; Curtayne, PC ; de Beer, E ; Emery, SJ ; Jones, DJ ; Paige-Green, P ; Pienaar, PA ; Ribbens, H ; Shackleton, MC ; Wolff, H Date: Mar 1993 The road user in South Africa currently experiences a large gap between gravel and paved roads in terms of the serviceability and standards which are applied. Because of the high coasts associated with current paved road standards, the provision ... Read more

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Browsing by Subject "Environmental aspects"

Browsing by Subject "Environmental aspects"

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