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41by P. S. Dreyer, A. D. Pont, D. F. Erasmus, B. J. Engelbrecht, J. P. OberholzerGet full text
Published 1959-01-01
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45by P.S. Dreyer, J.A. Loader, P.J. van der Merwe, P.J. Theo Koekemoer, J.P. OberholzerGet full text
Published 1980-06-01
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46by J.I. de Wet, J.A. Loader, P.S. Dreyer, J.J. Engelbrecht, J.H. Koekemoer, C.J. ViljoenGet full text
Published 1973-09-01
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47by H.G. van der Westhuizen, T.F.J. Dreyer, J.A. van Biljon, J.C. van der Merwe, P.S. DreyerGet full text
Published 1983-03-01
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48by B. Gemser, E. S. Mulder, H. P. Wolmarans, P. S. Dreyer, J. A. Stoop, F. van Oosten, S. P. Engelbrecht, J. F. StutterheimGet full text
Published 1955-07-01
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49by P.S. Dreyer, T.F.J. Dreyer, Johannes J. Engelbrecht, J.A. Loader, H.G. v.d. Westhuizen, C.J. ViljoenGet full text
Published 1976-12-01
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50by J.I. de Wet, P.J.T. Koekemoer, J.H. Koekemoer, M.J. du P. Beukes, D.J. Smith, P.S. Dreyer, A.D. PontGet full text
Published 1982-09-01
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51by P.J. van der Merwe, H.G. van der Westhuizen, T.F.J. Dreyer, M.J. du P. Beukes, Schalk Botha, P.S. DreyerGet full text
Published 1980-12-01
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52by D.J. Smith, P.S. Dreyer, A.D. Pont, T.F.J. Dreyer, G.M.M. Pelser, E. Brown, G.C. V., T.F.J. Dreyer, A.C. Barnard, J.J. Steenkamp, C.J. Wethmar, B.J. van der Walt, J.C. KrügerGet full text
Published 1982-03-01
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