The "father of modern management" was a professor at Claremont Graduate University from 1971 to 2003. From the L.A. Times obituary:
Drucker was called "the man who invented management," but on the occasion of his 90th birthday, he described his life work much more simply: "I looked at people, not at machines or buildings."That approach led to almost three dozen books and thousands of articles that form nothing less than a guide to the 20th century economy.
Drucker did not think up economic theories or elaborate systems of business operation. Rather, he looked at people working, put them in historical context, and saw "a new liberal art": management.
Drucker, who died at home today, wrote thirty-two books.