Number | Name | Date | Kind |
---|---|---|---|
1304823 | Thomas | May 1919 | |
1317705 | Island | Oct 1919 | |
1458525 | Daniels et al. | Jun 1923 | |
1992566 | Brines | Feb 1933 | |
4287040 | Alamaro | Sep 1981 | |
4482525 | Chen | Nov 1984 | |
4559206 | Treharne et al. | Dec 1985 | |
4873061 | O'Hare | Oct 1989 | |
4877589 | O'Hare | Oct 1989 | |
4915915 | Treharne | Apr 1990 |
Entry |
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Buckman, H. O., et al. "Chapter 2 The Supply and Availability of Plant Nutrients in Mineral Soils" The Nature and Properties of Soils The Macmillan Company (7th Edition) 1969 pp. 18-40. |