URL：https://s3-us-west-2.amazonaws.com/courses-images-archive-read-only/wp-content/uploads/sites/1505/2016/02/04110034/13100200773_ad1cb0dd75_k-1024x795.jpg
掲載元：https://courses.lumenlearning.com/suny-marketing-spring2016/chapter/reading-define-channels-of-distribution/
