''"The Calculi of Lambda-Conversion"'', by AlonzoChurch, ISBN: 0691083940, Format: Paperback, 83pp Pub. Date: January 1985  Publisher: Princeton University Press. 

Available in paper form from http://search.barnesandnoble.com/booksearch/isbnInquiry.asp?isbn=0691083940 - the full book is available to read (and the contents are fully linked!) from Google Books, though. It's < 150 pages, though...

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CategoryBook