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BRADFORD, ERNEST S. Survey and directory marketing research agencies in New York City.

Project Gutenberg's library also contains Volumes 1 and 3. Volume 1: E-book #11531; see directory http://www.ibiblio.org/gutenberg/1/1/5/3/11531/ Volume 3: E-book #11601; see directory http://www.ibiblio.org/gutenberg/1/1/6/0/11601/ Project Gutenberg also has an HTML version of this file which includes the original illustrations.