Some seasonal changes in the tracheal sap of pear and apricot trees

[21] Priestley J.H., 1925, NEW PHYTOL, V24, P24

[22] PRIESTLEY JH, 1922, NEW PHYTOL, V21, P62

[23] PRIESTLY JH, 1924, NEW PHYTOL, V23, P255

[24] SACHS J, 1887, PHYSL PLANTS, P274

[25] SCHROEDER J, 1871, LANTW VERS STAT, V14, P118

[26] STRASBURGER E, HISTOLOGISCHE BEITRA, V3, P591

[27] Willaman JJ, 1924, J AGRIC RES, V28, P0479

[21] Priestley J.H., 1925, NEW PHYTOL, V24, P24

[22] PRIESTLEY JH, 1922, NEW PHYTOL, V21, P62

[23] PRIESTLY JH, 1924, NEW PHYTOL, V23, P255

[24] SACHS J, 1887, PHYSL PLANTS, P274

[25] SCHROEDER J, 1871, LANTW VERS STAT, V14, P118

[26] STRASBURGER E, HISTOLOGISCHE BEITRA, V3, P591

[27] Willaman JJ, 1924, J AGRIC RES, V28, P0479