なぜ売れないのか
Subtitle: hitto shōhin wa kō shite tsukure
By: Ibuki Taku
Edition: Dai 1-han.
Publisher: PHP Kenkyūjo
Published: 1982
Place of publication: Kyōto-shi
Language: jpn
Number of pages: 207
Subjects: New products
Other titles: Naze urenai no ka; Best seller