THE MINERAL CONTENT OF AIR AND RAIN AND ITS IMPORTANCE TO AGRICULTURE

[1] BENNETT HH, 1939, SOIL CONSERVATION, P215

[2] BLACKTIN SC, 1934, DUST, P113

[3] CLARKE FW, 1924, US GEOL SURV B, V770

[4] DEROSSI G, 1947, SOILS FERT, V10, P400

[5] FARADAY M, 1825, Q J SCI, V19, P16

[6] On the accumulation of fertility by land allowed to run wild [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1905, 1 : 241 - 249

[7] HALL AD, 1911, J AGR SCI, V4, P57

[8] INGHAM G., 1940, Journal of the South African Chemical Institute, V23, P52

[9] INGHAM G, 1939, S AFR J SCI, V36, P161

[10] JACKS GV, 1939, RAPE EARTH, P103

[1] BENNETT HH, 1939, SOIL CONSERVATION, P215

[2] BLACKTIN SC, 1934, DUST, P113

[3] CLARKE FW, 1924, US GEOL SURV B, V770

[4] DEROSSI G, 1947, SOILS FERT, V10, P400

[5] FARADAY M, 1825, Q J SCI, V19, P16

[6] On the accumulation of fertility by land allowed to run wild [J]. JOURNAL OF AGRICULTURAL SCIENCE, 1905, 1 : 241 - 249

[7] HALL AD, 1911, J AGR SCI, V4, P57

[8] INGHAM G., 1940, Journal of the South African Chemical Institute, V23, P52

[9] INGHAM G, 1939, S AFR J SCI, V36, P161

[10] JACKS GV, 1939, RAPE EARTH, P103