"The Complete Vocabulary of Adults" #Takashi Saito #Takashi_Saito #Book #Society/General "How to Speak Clearly So Anyone Can Understand" #Akiko Nishito "Words That Make You More Likable the More You Use Them" #Tetsuya Kawakami "The Psychology of "Inner Face and Outer Face": You'll Be More Liked If You Stop Being a "Nice Person"" #Taizo Kato "Tips for Active Listening" #Taio Kaneda "The Thinking Method of People Who Somehow Don't Make Mistakes" #Masayuki Nakao Set of 6 books. Alcohol-sterilized.