telecom data frame contains data
on telecommunications providers in 21 countries in 1990.
This data frame contains the following variables (columns):
The name of the country.
Mainlines (M km).
Number of employees (10,000 persons).
Supplementary files for Coelli et al. (1998), p. 193.
Coelli, T. J., Rao, D. S. P., and Battese, G. E. (1998) An Introduction to Efficiency and Productivity Analysis, Springer, New York.
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