D.C. · D. Colwell · J C · J.D.
CABI Publishing · CSIRO Publishing
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Computations for Studies in Soil Fertility and Fertilizer Requirements | 978-0-85198-437-7 (0-85198-437-1) | 1978 |
| Estimating Fertilizer Requirement: A Quantitative Approach | 978-0-85198-905-1 (0-85198-905-5) | 1994 |
| National soil fertility project | 978-0-643-02448-9 (0-643-02448-4) |