| 1 | |
| 2 | Response of hybrid maize Texas-26 to nitrogen and phosphorus fertilization |
| Language: | English |
| 3 | Studies on the nitrogen phosphorus and potassium fertilization on hybrid maize |
| 4 | |
| Language: | English |
| 5 | |
| 6 | Study of microbial formation and transformation of nitrogen compounds |
| Language: | English |