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Testing for the existence of a consistent aggregate index of labor inputs
Berndt, Ernst R., (1974)
Substitution of structures, equipment and labor in Canadian production
Woodland, A. D., (1975)
Capital-labor substitution in manufacturing in a developing economy : the Philippines
Sicat, Gerardo P., (1970)
Business statistics
Brite, Robert L.,
Brite, Robert L., (1980)
Introduction to business statistics
Brite, Robert L., (1977)