Studies relating to the physical effects of dormant oil sprays
De Villiers, G.D.B.
Studies relating to the physical effects of dormant oil sprays - South Africa 1946 - 1-20 p. - Physical, Oil South Africa Department of Agricultural and Forestry. Science Bulletin No. 250 .
Studies relating to the physical effects of dormant oil sprays - South Africa 1946 - 1-20 p. - Physical, Oil South Africa Department of Agricultural and Forestry. Science Bulletin No. 250 .