1. The fate of nitrogen applied to soils;Allison;Advan. Agron.,1966
2. Total nitrogen;Bremner;Agron. Mongr.,1965
3. Reversion of fertilizer nitrogen in soils;Broadbent,1967
4. The control of soil physical conditions in pot trials;Fergus;Aust. J. expl. Agric, An. Husb.,1961
5. Quantitative estimates of nitrogen cycle processes concepts and review;Hauck,1971