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 "Willumsen, Jens and Symposium on Horticultural Substrates and Their Analysis","Symposium on Horticultural Substrates and their Analysis : Gl. Avernæs, Funen, Denmark, 5-11 September 1987",,"International Society for Horticultural Science], Commission for Plant Substrates",1988,Acta horticulturae,,9066051639,,https://cir.nii.ac.jp/crid/1130000795464241664