著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Gregg, Davis W. (Davis Weinert)","Group life insurance : an analysis of concepts, contracts, costs, and company practices",3rd ed,"Published for The S.S. Huebner Foundation for Insurance Education, Univ. of Pa. by R.D. Irwin",1962,The S.S. Huebner Foundation for Insurance Education,,,,https://cir.nii.ac.jp/crid/1130000798047277952