R. Sheley, JACOBS, J. A. M. E. S. S., and Martin, J. M.,
“Integrating 2,4-D and Sheep Grazing to Rehabilitate Spotted Knapweed Infestations”,
Journal of Range Management, vol. 57, no. 4, p. 371, 2004.
R. Sheley, JACOBS, J. A. M. E. S. S., and Martin, J. M.,
“Integrating 2,4-D and sheep grazing to rehabilitate spotted knapweed infestations”,
Rangeland Ecology & Management, vol. 57, no. 4, pp. 371 - 375, 2004.