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15by Philip Barker, David Hawkridge, Margaret Bell, Derick Unwin, Barbara B. Seels, Rita C. RicheyGet full text
Published 1996-12-01
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19by A. Hawkridge, M. Hatherill, F. Little, M.A. Goetz, L. Barker, H. Mahomed, J. Sadoff, W. Hanekom, L. GaiterGet full text
Published 2009-07-01
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20by Hassan Mahomed, Tony Hawkridge, Suzanne Verver, Deborah Abrahams, Lawrence Geiter, Mark Hatherill, Rodney Ehrlich, Willem A. Hanekom, Gregory D. HusseyGet full text
Published 2011-01-01
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