Guildhall 31 series account book with 14 cash columns and 80 pages blue casebound hardback blue vinyl cover to meet the most demanding professional standards each book contains 80 pages of precision ruled 95gsm ledger quality paper to ensure that both sides can be written on in ink debit and credit books feature red and blue rulings traditionally sewn to ensure that the pages lay completely flat making it easier to write entries tamper proof as they are sewn in sections making it impossible