Distribution and reproduction of Canada thistle in Iowa

[1] BEIJERINCK MW, 1887, VERHANDEL K AKAD WET, V25, P146

[2] Brenchley WE., 1920, WEEDS FARM LAND

[3] DETMERS F, 1927, OHIO EXP STA B, V414

[4] Ewart A.J., 1930, FLORA VICTORIA

[5] HANSEN AA, 1922, 106 PURD U AGR EXP

[6] Hegi G, 1929, ILLUSTRIERTE FLORA M, V2

[7] KING CM, 1925, IOWA AGR EXP STA B, V226

[8] KOLOKOLNIKOV LB, 1931, B APPL BOT GENETICS, V25, P249

[9] LANSDELL KA, 1927, S AFRICAN DEP AGR PR, V19

[10] LUND S, 1901, MONOGRAPHE D KYL D 3, V5

[1] BEIJERINCK MW, 1887, VERHANDEL K AKAD WET, V25, P146

[2] Brenchley WE., 1920, WEEDS FARM LAND

[3] DETMERS F, 1927, OHIO EXP STA B, V414

[4] Ewart A.J., 1930, FLORA VICTORIA

[5] HANSEN AA, 1922, 106 PURD U AGR EXP

[6] Hegi G, 1929, ILLUSTRIERTE FLORA M, V2

[7] KING CM, 1925, IOWA AGR EXP STA B, V226

[8] KOLOKOLNIKOV LB, 1931, B APPL BOT GENETICS, V25, P249

[9] LANSDELL KA, 1927, S AFRICAN DEP AGR PR, V19

[10] LUND S, 1901, MONOGRAPHE D KYL D 3, V5