共 12 条
[2]
BUSCEN M, 1929, STRUCTURE LIFE FORES
[4]
GARDNER FE, 1925, 20 U CAL AGR EXP STA, P1
[6]
MacDOUGAL D. T., 1929, CARNEGIE INST WASHINGTON PUBL, V397, P1
[7]
Murrill W.A., 1906, J NY BOT GARD, V7, P143
[9]
RUMBOLD C, 1916, REPT P AM PHIL SOC, V55, P485
[10]
SCHWARZ MB, 1922, ZWEIGSTERBEN ULMEN T