共 11 条
[1]
CAMPBELL WV, 1958, DISSERTATION
[2]
CRAWFORD JC, 1924, NCAESBNCDA
[3]
EDDY CO, 1927, SCAESB 236
[4]
FRIEND RB, 1931, CAESTB 332
[5]
HOWARD NF, 1924, 1243 USDA B
[6]
HOWARD NF, 1930, USDAFB 1624
[7]
LIST GM, 1921, CAESB 271
[8]
STRAND AB, 1959, PC
[9]
STRAND AB, 1943, AMER SOC HORT SCI, V42, P569
[10]
THOMAS FL, 1924, AAESB 221