Folios are very tall books - anything over 27 cm in height. This is a very large book. It lies flat on the shelf.
Pamphlets are very thin books.
Books with a size code in their call number are kept on the same floor as other books with the same call number, but shelved in a separate sequence. Pamphlets and folio pamphlets are keptin brown boxes at the start of the book shelves. Within each letter books are filed numerically e.g. KM26 comes before KM234. See the Law Library Guide for more details.