Frank Gallinelli founded RealData, Inc., a company specializing in software and educational resources for real estate investors, developers and brokers, in 1981. His 2003 real estate book, What Every Real Estate Investor Needs to Know About Cash Flow (McGraw Hill), is still a top seller. He teaches income-property analysis in Columbia University’s MS program in Real Estate Development and has appeared on Consuelo Mack’s WealthTrack on PBS. Visit www.realdata.com

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