1. Final regulations for implementing National Environmental Policy Act (NEPA);Agricultural Research Service;Fed. Reg.,1986
2. Niche overlap and the evolution of competitive interactions;Akcakaya,1989
3. Biological Control Act 1984, No. 139 of 1984, Commonw. Gov. Print. Cat. 15668/84 5, Commonwealth Government Printer, Canberra, A.C.T., Australia, 25 pp.
4. Predicting spotted knapweed migration in Montana;Chicoine;Mont. Agresearch,1988
5. Biological control of northern jointvetch in rice with an endemic fungal disease;Daniel;Weed Sci.,1973