The effect of sonic vibration on the bacterial plate count of soil I. L. Stevenson OriginalPaper Pages: 1 - 8
The effect of soil drying on humus decomposition and nitrogen availability H. F. Birch OriginalPaper Pages: 9 - 31
Effect of farmyard manure on the trace element content of soils and of plants grown thereon H. J. AtkinsonG. R. GilesJ. G. Desjardins OriginalPaper Pages: 32 - 36
The influence of the environment on seed and seedling-mortality J. W. LudwigJohn L. Harper OriginalPaper Pages: 37 - 48