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2.
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3.
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4.
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5.
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6.
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7.
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8.
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9.
Thomas F. Powers , "The Impact of Productivity on the Service Restaurant ," The Cornell Hotel & Restaurant Quarterly , August, 1974.
10.
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11.
Julius Shiskin , "The 1972-73 Consumer Expenditure Survey — Some First Year Diary Results," paper presented to the American Marketing Association, April 16, 1975.
12.
George Silvestri , Supervisory Labor Economist, Bureau of Labor Statistics, Personal Communication, July 9, 1975.