2.192
bewerkingen
| Regel 4: | Regel 4: | ||
== Referentie == | == Referentie == | ||
# Gary A. Strobel - ''Biological Control of Weeds'' Scientific American, July 1991 | # Gary A. Strobel - ''Biological Control of Weeds'' Scientific American, July 1991 | ||
# | # [https://www.vtwonen.nl/tuinieren/tuininspiratie/het-voordeel-van-onkruid/ ''Hoera Onkruid!'' vtwonen.nl 22-9-2021] | ||
== Bron == | == Bron == | ||