1. Inorganic forms of nitrogen;Bremner,1965
2. The availability of phosphorus to rice grown under flooded conditions as evaluated by isotope dilution;Davide;Philipp. Agric.,1961
3. Volatile acids by direct titration;Di Lallo;J. Wat. Pollut. Control Fed.,1961
4. Transformation of manganese in a waterlogged soil as affected by redox potential and pH;Gotoh,1972
5. Transformation of iron in a waterlogged soil as influenced by redox potential and pH;Gotoh,1974