External links
References
- Barker, G.M., Editor. (2002): Molluscs as crop pests CABI Publishing. CAB International, Wallingford, UK.
- Olkowski, W.; Daar, S.; Olkowski, H. (1991): Common sense - pest control. The Taunton Press. USA.
- Olkowski, W.; Daar, S.; Olkowski, H. (1995): The gardener?s guide to common-sense pest control. The Taunton Press. USA.
- Port, G.; Ester, A. (2002): Gastropods as pests in vegetable and ornamentals crops in Western Europe in Molluscs as crop pests. Edited by G.M. Barker. CABI Publishing, Wallingford, UK.