Published source details
Dawson F.H. & Henville P. (1991) An investigation of the control of Crassula helmsii by herbicidal chemicals (with interim guidelines on control). Report to the Nature Conservancy Council (GB) report. Report to the Nature Conservancy Council (GB).
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.