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Peter Duffie - Principles and Deceptions
An easy trip through the arithmetical principles of card magic.
This ebook covers two Rusduck principles first published in The Cardiste plus other principles from Gilbreath， Hummer & Gene Finnell. The principles are explained in easy-to-understand language， along with problems for the reader to solve with the solutions given and tricks to do. Plus notes from Roy Walton and others.
This six-part series originally appeared in Profile magazine bimonthly from April 1993 to February 1994.
There is also a bonus item in this ebook： Dave Campbell's Automatic Speller.