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ISSN:0167-6903|25|2|81-87

Springer Publishing Company ‎(1998)‎

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By Sparg S.G.   Jäger A.K.   Magwa M.L.   van Staden J.   in Outlook on Agriculture

ISSN:0030-7270|34|2|116-120

IP Publishing Ltd‎(2005)‎

Access to resources Favorite 1.8044034