por Hufschmidt, Maynard M | East-West Environment and Policy Institute (Honolulu, Hawaii).
por Saad, Odilon, 1923-.
por MISHAN, E. J.
por HOFFMANN, R | ENGLER, J.J. de C | SERRANO, O | THAME, A.C. de M | NEVES, E.M.
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