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申し訳ありません、このコンテンツはただ今 アメリカ英語 のみです。 For the sake of viewer convenience, the content is shown below in the alternative language. You may click the link to switch the active language.

Welcome to the new-look BTB Press website. The site is still being developed, so please bear with us while we get everything up to speed. There are still some resources that need to be added for one or two of the books, and we are still working on the Japanese and mobile versions of the site. We hope to have everything working smoothly by Golden Week. Thanks for your patience, and thanks for using BTB Press publications.