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[1]
GRABE DF, 1970, 29 ASS OFF SEED AN H
[2]
NIXON G, 1970, 23RD P NZ WEED PEST, P72
[3]
Parsons W.T., 1973, NOXIOUS WEEDS VICTOR
[4]
SCHMIDL L, 1968, 1ST P VICT WEEDS C M