Nitrogen-fixing bacteria of the genusBeijerinckia in South African soils J. H. Becking OriginalPaper Pages: 193 - 206
Growth inhibition ofChlorella pyrenoidosa produced by sodium dihydrogen phosphate and its reversal by calcium Clyde Eyster OriginalPaper Pages: 207 - 214
Sulphur oxidation in tidal mangrove soils of Sierra Leone M. G. R. Hart OriginalPaper Pages: 215 - 236
Further observations on humus decomposition and nitrification H. F. Birch OriginalPaper Pages: 262 - 286
Competitive adaptation of the cation exchange capacity of roots L. K. WiersumK. Bakema OriginalPaper Pages: 287 - 292