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Technology, productivity, and labor in the bituminous coal industry, 1950-79
Zeisel, Rose N., (1981)
Energy facts
Smith, Winifred Griffin, (1973)
An analysis of transportation alternatives for meeting Texas' industrial demand for western coal through the year 2000
White, D. M., (1978)
Computation of Zellner-Theilʹs three stage least squares estimates
Narayanan, R., (1969)
Cuba and the non-aligned movement
Narayanan, R., (1981)
The EEC and Latin America