@article{oai:u-ryukyu.repo.nii.ac.jp:02005850,
 author = {具志, 幸昌 and 喜納, 政修 and Gushi, Yukimasa and Kina, Seishyu},
 issue = {11},
 journal = {琉球大学農家政工学部学術報告, The science bulletin of the Division of Agriculture, Home Economics & Engineering, University of the Ryukyus},
 note = {1. The current practice of concrete works in Okinawa and the problems involved were describe and pointed out. 2. The variation of concrete strength sampled has been found fairly large and its causes are due mainly to the bulk measuring method of materials, especially cement and water measuring. 3. Standard deviations or coefficients of variation of concrete strength measured in this study show that the level of concrete work in Okinawa is not high, and they can be used in determination of mixing ratio of concrete materials., 紀要論文},
 pages = {199--204},
 title = {沖縄におけるコンクリート施工の現状とその問題点}
}