Response of onion (Allium cepa L.) to sowing date and plant population in the Central Free State, South Africa
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1986 ◽
Vol 58
(2)
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pp. 187-195
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2003 ◽
Vol 53
(1)
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pp. 16-20
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2012 ◽
Vol 8
(2)
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pp. 126-130
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