In order to count as a pamphlet , UNESCO requires a publication ( other than a periodical ) to have `` at least 5 but not more than 48 pages exclusive of the cover pages '' ; a longer item is a book .
In order to count as a pamphlet , UNESCO requires the pamphlet to have ` at least 5 but not more than 48 pages ' not including the cover page ; a longer item is a book .