@article{weko_1987_1,
   author	 = "古井,恒",
   title	 = "PETボトルのリサイクル",
   journal	 = "流通問題研究",
   year 	 = "1997",
   volume	 = "29",
   number	 = "",
   pages	 = "61--99",
   month	 = "jul"
}