共 11 条
[1]
AUCHTER EC, 1932, P VIRGINIA STATE HOR, V37, P205
[2]
DEXTER S. T., 1937, Journal of the American Society of Agronomy, V29, P568
[5]
MAXIMOW NA, 1929, B APPL BOT GEN PLANT, V22, P3
[6]
SEMAKIN KS, 1938, ACTA I BOT ACAD SC 4, P213
[7]
SEMAKIN KS, 1936, ACTA I BOT ACAD SC 4, P225
[8]
SHIRLEY HL, 1939, J AGR RES
[9]
TUMANOW II, 1930, WISS ARCH LANDW A, V3, P389
[10]
UDOLSKAJA N, 1934, CR HEBD ACAD SCI, V2, P47