<?xml version="1.0" encoding="utf-8"?><root><leader xmlns="http://www.loc.gov/MARC21/slim">00000na   22     1   450</leader><controlfield tag="001">739686</controlfield><datafield tag="210" ind1=" " ind2=" " xmlns="http://www.loc.gov/MARC21/slim"><subfield code="d">1918</subfield><subfield code="c">University of California Press‏‫‭</subfield></datafield><datafield tag="300" ind1=" " ind2=" " xmlns="http://www.loc.gov/MARC21/slim"><subfield code="a">A Survey of Symbolic Logic </subfield></datafield><datafield tag="200" ind1="1" ind2=" " xmlns="http://www.loc.gov/MARC21/slim"><subfield code="a">بررسی منطق نمادین [کتاب انگلیسی]</subfield><subfield code="a">A Survey of Symbolic Logic</subfield><subfield code="a">Clarence Irving Lewis</subfield><subfield code="b">book</subfield><subfield code="b">portal_lib</subfield><subfield code="b">book</subfield><subfield code="b">portal_lib</subfield><subfield code="f" /></datafield><datafield tag="101" ind1=" " ind2=" " xmlns="http://www.loc.gov/MARC21/slim"><subfield code="a">English</subfield></datafield><datafield tag="600" ind1=" " ind2=" " xmlns="http://www.loc.gov/MARC21/slim"><subfield code="a" /></datafield></root>