00441ntaaa2200169   45000030003000000050017000030080021000200400037000410820017000781000026000952450031001212500010001522600039001623000015002015000035002166500020002510120251027202612.00714s1973  ag    01   aAR-BaBNbspacAR-BaBNeaacrdRIC  a341.1300 J71  aJones, Joseph Marion   aThe united nations at work  a1 ed.  aOxford : bPergamon Press, cc1965  axiv, 238 p  aLa obra de las Naciones Unidas  aNaciones Unidas