COPPER DEFICIENCY IN SITKA SPRUCE SEEDLINGS

[1] BENZIAN B, 1955, 1953 1954 FOR RES FO, P38

[2] COPPER DEFICIENCY OF FRUIT TREES IN BRITAIN [J]. NATURE, 1950, 165 (4206) : 920 - 921

[3] CROWTHER EM, 1954, 1952 1953 FOR RES FO, P84

[4] COPPER-DEFICIENCY DISEASE OF PEAR TREES [J]. NATURE, 1950, 165 (4188) : 192 - 192

[5] PIZER N. H., 1955, JOUR ROYAL AGRIC SOC ENGLAND, V116, P68

[6] 1956, 1955 ROTH EXP STAT R

[1] BENZIAN B, 1955, 1953 1954 FOR RES FO, P38

[2] COPPER DEFICIENCY OF FRUIT TREES IN BRITAIN [J]. NATURE, 1950, 165 (4206) : 920 - 921

[3] CROWTHER EM, 1954, 1952 1953 FOR RES FO, P84

[4] COPPER-DEFICIENCY DISEASE OF PEAR TREES [J]. NATURE, 1950, 165 (4188) : 192 - 192

[5] PIZER N. H., 1955, JOUR ROYAL AGRIC SOC ENGLAND, V116, P68

[6] 1956, 1955 ROTH EXP STAT R