Purchase terms and conditions:1. Requested books will be SENT ON LINE in PDF format within a week from the reception date of the bank transfer to ISPEF2. The books will be displayed on your own computer.3. The book pages have a A4 format: 29,7cm. x 21,0cm.4. It is possible to print only one personal copy. It is forbidden to use it, entirely or in part, for personal use, according to editorial laws. Any violation will be punished in the ways regulated by laws.5. I.S.P.E.F. publications are regulated by copyright and can't be publicized without I.S.P.E.F. approval, whom can be contacted on ispef-libri@ispef.itBooks purchase and shipping can be done online, on I.S.P.E.F. website.To buy our books, you have to:1. Click on Login and register, in case you are haven't yet; 2. know all the "Terms" ;3. click on the books you have chosen and add them to the "shopping cart"4. go to "Purchase" and then to "Access"; 5. Pay through bank transfer.L'I.S.P.E.F., after receiving the payment, will send an e-mail with the permission to download the books.