Thank you for viewing. This product is a set of two specialized books that supported Japanese marketing research from the post-war period to the high-growth era: "Marketing Research Theory" by Hayashi Nishimura "Principles of Modern Marketing" by Yoshimitsu Torigoe These books systematically summarize the theories and practical methods that are the prototypes of modern marketing research, such as market research, consumer behavior analysis, questionnaire design, and group interviews. In particular, the ability to learn the origins of current marketing terms, such as pull strategy, push strategy, personal selling, and sales promotion structure, makes these books highly valuable as research materials. There are writings, underlining, and annotations in the text. This is not just a used book; it can be evaluated as a practical and research material that has been actually read and has had important parts examined. It is possible that these books were used as part of a university research library or as training materials within a company. The covers and dust jackets show signs of aging, such as yellowing, scratches, and stains, but there are no problems with reading or using the materials. These books are not suitable for those seeking pristine copies, but they are products for those who prioritize content and are interested in specialized fields. ⸻ #Marketing #MarketingResearch #MarketResearch #ConsumerBehavior #SalesStrategy #PullStrategy #PushStrategy #SpecializedBooks #AcademicBooks #ResearchMaterials #WithWriting #UsedBooks