what is the name of the book that is used for the movie that has The song  The Beautiful Briny?
The Beautiful Briny: "The Beautiful Briny" is a song written by Robert and Richard Sherman, originally for the Walt Disney film "Mary Poppins", but eventually used instead in the 1971 musical film production "Bedknobs and Broomsticks". Bedknobs and Broomsticks: Bedknobs and Broomsticks is a 1971 British-American musical fantasy film produced by Walt Disney Productions and released by Buena Vista Distribution Company in North America on December 13, 1971. Bedknobs and Broomsticks:  It is based upon the books "The Magic Bedknob; or, How to Become a Witch in Ten Easy Lessons" (1943) and "Bonfires and Broomsticks" (1945) by English children's author Mary Norton.
The Magic Bedknob