0691027951 SHOW MOOCHABLE + ? RELATED SEARCHES > ADVANCED SEARCH > SHOW COVERS + ASIN Copies Paul J. Nahin An Imaginary Tale: The Story of i [the square root of minus one] 0 Search BookMooch for a book: SEARCH BOOKMOOCH > Search Amazon for a book: amazon.co.uk amazon.de amazon.es amazon.fr amazon.it amazon.cn SEARCH AMAZON >