| 61 | |
| 62 | |
| Language: | English |
| 63 | |
| 64 | |
| Language: | English |
| 65 | |
| 66 | Nitrogen economy and weed control in rice-wheat crop rotation |
| Language: | English |
| 67 | |
| 68 | |
| Language: | English |
| 69 | |
| 70 | |
| Language: | English |
| 71 | Studies on nitrogen economy in rice through summer mung as affected by nitrogen and Rhizobium |
| 72 | Production potential of intensive crop rotations under resource constraints |
| Language: | English |
| 73 | Requirement of nitrogen, phosphorus and potassium in rice-wheat rotation |
| 74 | |
| Language: | English |
| 75 | |
| 76 | |
| Language: | English |
| 77 | Some factors influencing production of assimilates in tea, Camellia sinensis L |
| 78 | |
| Language: | English |
| 79 | |
| 80 | |
| Language: | English |