... Tropics. Edited by Frank Eyhorn, Marlene Heeb, Gilles Weidmann. http://
www.ifoam.bio/ FiBL. 2011. African Organic Agriculture Training Manual – ... J.M. Jalink, H., Langerak , C.J., and van den Bulk R.W. 2004. Challene
gs for the production of high quality organic seed. Seed Testing ...
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