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Work After serving on the faculty of Northwestern University ’s Kellogg School of Management ( 1968 – 1975 ) and on the faculty at the University of Pittsburgh ( 1975 – 1991 ) , Zaltman was named the Joseph C. Wilson professor of Business Administration at Harvard Business School in 1991 .
 Northwestern University, Kellogg School of Management, University of Pittsburgh, Zaltman, Business, Harvard Business School
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Northwestern University, Kellogg School of Management, University of Pittsburgh, Zaltman, Business, Harvard Business School