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ISSN:1460-2431|50|330|79-87

Oxford University Press‎(1999)‎

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By van der Westhuizen MM   Cramer MD   in Journal of Experimental Botany

ISSN:1460-2431|49|329|1977-1985

Oxford University Press‎(1998)‎

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By Mortimer P   Swart JC   Valentine AJ   Jacobs G   Cramer MD   in South African Journal of Botany

ISSN:0254-6299|69|2|135-143

NISC Pty Ltd‎(2003)‎

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By van der Merwe C.A.   Cramer M.D.   in Plant and Soil

ISSN:0032-079X|221|1|5-11

Springer Publishing Company ‎(2000)‎

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By G Hoefsloot   Termorshuizen A.J   Watt D.A.   Cramer M.D   in Plant and Soil

ISSN:0032-079X|277|1-2|85-96

Springer Publishing Company ‎(2005)‎

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