| Walker, C., 2011. Photos from the collection of Clive Walker. Pachyderm Special 50th issue (Pachyderm Past and Present): 5-8
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| Walker, C.H., 1999. Lightning disaster in Lapalala Wilderness. Rhino Watch 12 in SA Game & Hunt 5 (3): 29, figs. 1-2
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| Walker, C., 1999. Notes from the Wilderness Trust of Southern Africa. Bushlife 1999 (1): 1-4
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| Walker, C., 1999. Notes from the Wilderness Trust of Southern Africa. Bushlife 1999 (2): 1-4
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| Walker, C., 1999. The old Melkrivier School - Walker's Wayside. Wilderness Sanctuary May 1999: 1-4
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| Walker, C., 1998. Notes from the Wilderness Trust of Southern Africa. Bushlife 1998 (1): 1-8
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| Walker, C.H., 1997. Rhino Museum in the Waterberg Mountains of the Northern province, South Africa. Pachyderm 23: 44-45, fig. 1
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