4820: Office books, forms, exercise books, folders, binders

482010: Registers, account books, note books, diaries etc 482020: School, etc, exercise books 482030: Binders, not book covers, folder or file covers, pape 482040: Business forms, interleaved carbon sets, etc 482050: Albums for samples or for collections, of paper 482090: Office supplies nes, of paper, book covers, blotters 4820: Office books, forms, exercise books, folders, binders