1. Effect of microorganisms on permeability of soil under prolonged submergence;Allison;Soil Sci.,1947
2. Green revolution;Barker;Current Affairs Bull, Sydney, Australia,1970
3. Soil puddling;Bodman,1948
4. Aggregation of clay in six New Zealand soil types as measured by disaggregation procedures;Churchman;Geoderma,1986
5. Principles and practices of rice production;De Datta,1981