@article{沼田_1955, 
  title={草地生態学の動向と問題点}, 
  volume={1}, 
  DOI={10.14941/pregrass.1.1-2_6}, 
  number={1-2}, 
  publisher={Japanese Society of Grassland Science}, 
  author={沼田}, 
  year={1955}
  }