2
|
|
Product differentiation -- Japan. / https://id.loc.gov/authorities/subjects/sh94005861 https://id.loc.gov/authorities/names/n78089021-781 : Schaede, Ulrike,
|
2008
|
1
|
3
|
|
Product differentiation -- Mathematical models. / https://id.loc.gov/authorities/subjects/sh94005861 https://id.loc.gov/authorities/subjects/sh2002007921 : Anderson, Simon P.
|
1992
|
1
|