@article{oai:u-ryukyu.repo.nii.ac.jp:02006283,
 author = {比嘉, 信吉 and Higa, Shinkichi},
 issue = {89},
 journal = {琉大農家便り},
 note = {紀要論文},
 pages = {6--9},
 title = {施肥量計算}
}