{"record":{"leader":"cx  a22     3  45","datafield":[{"ind2":" ","ind1":" ","subfield":[{"code":"a","content":"http://viaf.org/viaf/34161693851515931125"},{"code":2,"content":"VIAF"},{"code":"C","content":"VIAF"},{"code":"d","content":20240305}],"tag":"035"},{"ind2":" ","ind1":" ","subfield":{"code":"a","content":"20211123afrey50      ba0"},"tag":100},{"ind2":" ","ind1":" ","subfield":[{"code":"a","content":0},{"code":"b","content":1},{"code":"c","content":0}],"tag":106},{"ind2":" ","ind1":" ","subfield":{"code":"a","content":"aa"},"tag":120},{"ind2":" ","ind1":" ","subfield":{"code":"a","content":"AFNOR"},"tag":152},{"ind2":1,"ind1":" ","subfield":[{"code":7,"content":"ba0yba0y"},{"code":9,"content":0},{"code":"a","content":"Fernández Ordás"},{"code":"b","content":"Rocío A."}],"tag":200},{"ind2":3,"ind1":" ","subfield":[{"code":"a","content":"FR"},{"code":"b","content":"Abes"},{"code":"c","content":20240308},{"code":"g","content":"AFNOR"}],"tag":801},{"ind2":" ","ind1":" ","subfield":{"code":"a","content":"Las fortificaciones de la ciudad de León desde la antigüedad al año 1000. Contexto histórico, arqueológico y jurídico / Rocío A. Fernández Ordas, 2020"},"tag":810},{"ind2":" ","ind1":" ","subfield":{"code":"a","content":"Fernández Ordás, Rocío A."},"tag":900}],"controlfield":[{"tag":"001","content":258587954},{"tag":"003","content":"http://www.idref.fr/258587954"},{"tag":"004","content":20211123},{"tag":"005","content":20240308110718},{"tag":"006","content":991345201},{"tag":"007","content":991345201},{"tag":"008","content":"Tp5"}]}}