B-format refers to a specific size of paperback books, typically measuring around 5 inches by 7.75 inches, or 129 mm by 198 mm. This format is larger than mass-market paperbacks but smaller than trade paperbacks. B-format books are commonly used for literary fiction, non-fiction, and other genres aimed at a general readership. The size makes them more portable than larger formats while still offering enough space for comfortable reading.

英語での「B-format」の定義と意味

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