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| 2 | |
| Language: | English |
| 3 | Studies on urea-aldehyde condensation products as slow acting nitrogenous fertilizers |
| 4 | Efficiency of fertilizer nitrogen utilisation at various physiological stages of growth of rice |
| Language: | English |
| 5 | |
| 6 | |
| Language: | English |
| 7 | |
| 8 | Studies of fertilizer nitrogen in multiple cropping systems as traced with 15 N |
| Language: | English |