00579cam a22001812a 4500001001300000003000400013005001700017008004100034010001700075040001900092050002200111110007400133245008400207260003700291300002100328650003100349999001700380unk83035839 DLC20260227112800.0830825s1921 dcu 100 0 spa  aunk83035839  aDLCcCarPdDLC00aHD4813b.P3 1921c2 aPan-American Federation of Labor.bCongress.n(3rd :d1921 :cMexico)10aInforme oficial del tercer Congreso de la ConfederacioĢn Obrera Pan-Americana. a[Washington, DC :bs.n.,c1921?] a144 p. ;c18 cm. 0aWorking classvCongresses. c91444d91444