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 "Sunley, J.G.",Working stresses for structural timbers : for visually and mechanically graded material,2nd ed,H.M.S.O.,1965,Forest products research bulletin,,,,https://cir.nii.ac.jp/crid/1130000795916359936