The root habits of certain weeds of southeastern Nebraska

[1] ARNY AC, 1932, U MINN AGR EXP STA T, V84

[2] Britton Nathanial, 1936, ILLUSTRATED FLORA NO

[3] Quantitative study of the entire root systems of weed and crop plants under field conditions [J]. ECOLOGY, 1937, 18 (01) : 62 - 79

[4] WEAVER JE, 1939, PLANT ECOLOGY

[1] ARNY AC, 1932, U MINN AGR EXP STA T, V84

[2] Britton Nathanial, 1936, ILLUSTRATED FLORA NO

[3] Quantitative study of the entire root systems of weed and crop plants under field conditions [J]. ECOLOGY, 1937, 18 (01) : 62 - 79

[4] WEAVER JE, 1939, PLANT ECOLOGY