1. Standardized coding of phenological stages of crops and weeds;Bleiholder H.;Gesunde Pflanzen
2. The Oil Palm;Corley R.V.H.,2003
3. New evidence for the African origin of Elaeis guineensis Jacq. by the discovery of fossil seeds in Uganda;Ergo A.B.;Annales de Gembloux
4. Statistical Yearbook 2010,2010
5. Standardized coding of the phenological development stages of mono and dicotyledonous plants; the general extended BBCH scale;Hack H.;Nachrichtenbl Deutsch Pflanzenschutzd