Scotch thistle: AKA:Onopordum acanthium: a giant problem. - United States. (U.S. Dept. of the Interior, Bureau of Land Management], 2001)
"BLM/CA/AE-2001/009+9015"--P. [6].
Shipping list no.: 2002-0012-P.
Keywords: Weeds / California.; Thistles / California.