@article{oai:u-ryukyu.repo.nii.ac.jp:02006662, author = {仲田, 元一 and Nakada, Genichi}, issue = {3}, journal = {琉球大学農家政学部学術報告, Science bulletin of Agriculture & Home Economics Division, University of the Ryukyus}, note = {1. The specific gravity which has been used in Japan so far shall not be used in the northern part of Okinawa which is treated in this report, instead 2.61 should be used as the specific gravity for sand in this area. 2. For the calculation of mixing plan construction, the table No.2 should be used in order to have the workable one which is wanted., 紀要論文}, pages = {246--261}, title = {沖縄に於けるコンクリート骨材の性状に就いて1} }