00301nas a2200121Ia 4500008004100000040001000041041000700051044000700058082001800065245001100083260006200094300002300156160115c99999999ec ||||||||||||   ||spa||  aCCENA  aEs  aUS  aHE10483/10486  aPopuli  aNew YorkbUnited Nations Population Fundcjulio-nov. 1992  aVol. XIX Nº (2-5)