paperback book paper-back book paperback softback book softback soft-cover book soft-cover
paperback_book%1:06:00:: paper-back_book%1:06:00:: paperback%1:06:00:: softback_book%1:06:00:: softback%1:06:00:: soft-cover_book%1:06:00:: soft-cover%1:06:00::
a book with paper covers