Some accessory factors in plant growth and nutrition

[1] COOPER, 1911, LANCET, P1267

[2] FUNK, 1912, J PHYSL, V45

[3] FUNK C, 1912, J PHYSL, V45

[4] FURST, Z HYG INFECKT, V72, P121

[5] HOPKINS, 1913, BRIT MED J, V2, P463

[6] HOPKINS FG, 1912, J PHYSL, V44

[7] OSBORNE, 1911, CARNEGIE I PUBLICATI, V156

[1] COOPER, 1911, LANCET, P1267

[2] FUNK, 1912, J PHYSL, V45

[3] FUNK C, 1912, J PHYSL, V45

[4] FURST, Z HYG INFECKT, V72, P121

[5] HOPKINS, 1913, BRIT MED J, V2, P463

[6] HOPKINS FG, 1912, J PHYSL, V44

[7] OSBORNE, 1911, CARNEGIE I PUBLICATI, V156