共 11 条
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COTTON EC, 1906, DIV NURSERY ORCHARD, V7, P55
[3]
CRAIGHEAD FC, 1919, USDA B, V787, P1
[4]
Garman H., 1916, KENTUCKY AGR EXP STN, V200, P99
[5]
GILLETTE CP, 1907, COLORADO FRUIT GROWE, V2, P3
[6]
HOPKINS AD, 1907, USDA BUR ENT B, V58, P31
[7]
HOPKINS AD, 1906, USDA BUR ENTOMOL B, V58, P1
[8]
HOUSER JS, 1908, OHIO AGR EXPT STA B, V194, P169
[9]
SEVERIN HC, 1910, 7 S DAK STAT HORT SO, P123
[10]
WASHBURN FL, 1908, 12 STAT ENT MINN, P91