1. Agreement on the Application of Sanitary and Phytosanitary Measures. Annex 1;Anon,1994
2. International Standards for Phytosanitary Measures. Section 1. Guidelines for Pest Risk Analysis (Draft Standard);Anon,1995
3. What makes a community invasible? Colonisation, succession and stability;Crawley,1987
4. Biological Invasions: A Global Perspective,1989
5. Naturalisation of Plants in Urban Auckland: A Series of Articles from the New Zealand Journal of Botany;Esler,1988