00469nam a22001934a 45000010005000000350020000050030009000250050017000340080041000510400035000920410008001270440008001351000021001432450019001642640051001833000018002346500012002526500011002642116 a(Koha2011)31916AR-ReUNN20260702132803.0240315s1949 xxu eng d aAR-ReUNNbspacAR-ReUNNeaacr20 aeng axxu1 aOwen, W. V.e???10aLabor problems 1aNew York : bThe Ronald Press Company, c1949. a570 páginas 4aTrabajo 4aEmpleo