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The pace of technological change and factors affecting it
Wolfbein, Seymour L., (1965)
Manpower in the United States with projection to 1970
Wolfbein, Seymour L., (1962)
Measurement of work-life expectancy : development of tables of working life for men: total males, urban and rural residents, white and nonwhite groups
Wolfbein, Seymour L., (1950)