The effects of various levels of NPK fertilization on yields of potato, cabbage, and kidney bean.

@inproceedings{Nurtika1977TheEO,
  title={The effects of various levels of NPK fertilization on yields of potato, cabbage, and kidney bean.},
  author={Nunung Nurtika and Ap Andries Hekstra},
  year={1977}
}

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