1. The introduced slugs of New Zealand (Gastropoda: Pulmonata);Barker;N. Z. J. Zool.,1979
2. Slug problems in New Zealand pastoral agriculture;Barker,1989
3. Feeding by slugs on some pasture plant species: Laboratory experiments;Barker,1983
4. Variation in spring growth within white clover;Caradus,1990
5. Legume breeding strategy for increased nitrogen fixation in New Zealand temperate pastures;Crush,1989