00340nam a2200121 a 450000100100000000500170001000800410002704000250006808200090009324500410010226000550014330000200019800002809720200930031339.0110406s1988    dr            000 0 spa d  aDO-SdBNPbspacBNPHU  aA65400aAprender con los sellos postales. /.  aSanto Domingo, :bUnión postal universal,c1988.  a23 p. ;c21 cm.