Occasionally you will find Disneyland cel set-ups that have a cel from one film and a background from another. For example it is common to see a Jungle Book cel on a litho of a Sleeping Beauty background. These are also referred to as Disneyland Art Corner cels.
Important note: ISBN numbers were introduced in 1970. Any book printed before 1970 will not have an assigned ISBN. Why Search by ISBN. ISBNs are useful when looking for a specific printing of a book. A student, for example, can search by ISBN to find the correct edition of a textbook for school.
Joseph Liouville first proved the existence of transcendental numbers in 1844, and in 1851 gave the first decimal examples such as the Liouville constant. in which the n th digit after the decimal point is 1 if n is equal to k! (k factorial) for some k and 0 otherwise.