Name the British-American musical fantasy film produced by Walt Disney Productions based upon the book 'How to Become a Witch in Ten Easy Lessons' which features the fraudulent magician Professor Emelius Browne who was played by David Tomlinson the English actor and comedian?
David Tomlinson: David Cecil MacAlister Tomlinson (7 May 1917 – 24 June 2000) was an English stage, film and television actor and comedian. 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.
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