1. Introduction to Soil Microbiology;Alexander,1961
2. Studies on soil polysaccharides;Barker;Carbohyd. Res.,1967
3. Effect of different types of organic materials and lime on soil aggregation;Browning;Soil Sci.,1944
4. The effect of rhizobial polysaccharides on aggregate stability;Clapp,1962
5. The effect of periodate oxidation on the strength of soil crumbs: I. Qualitative studies;Clapp,1965