Sivard, Ruth Leger.
World energy survey / Ruth Leger Sivard.
— 2nd ed. — Leesburg, Va., USA (Box 1003, Leesburg 22075) : World Priorities, c1981. 44 p. : il. (Algunas col.) ; 28 cm.
"Published under the auspices of the Rockefeller Foundation."
Incluye referencias Bibliograficas (p. 44).
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