By Labuschagne J   Hardy MB   Agenbag GA   in African Journal of Range and Forage Science

ISSN:1727-9380|26|1|37-42

Taylor & Francis Ltd‎(2009)‎

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By Kotze T.N.   Langenhoven W.R.   Agenbag G.A.   in Field Crops Research

ISSN:0378-4290|55|1|175-181

Elsevier‎(1998)‎

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