共 8 条
[1]
*AM SOC NAT, 1913, RES B AM SOC NAT NEB, V4
[2]
CORRENS C, 1910, BER DEUT BOT GES, V28, P418
[3]
DEVRIES H, 1905, SPECIES VARIETIES TH, P309
[4]
EAST EM, 1911, B CONN AGR EXPT STA, V167, P106
[6]
HARTLEY CP, 1902, YB USDA, P543
[7]
1911, ANN RPT NEBR AGR EXP, V24, P62
[8]
1911, ANN RPT NEBR AGR EXP, V24, P59