<?xml version="1.0" encoding="utf-8"?><root><leader xmlns="http://www.loc.gov/MARC21/slim">00000na   22     1   450</leader><controlfield tag="001">739956</controlfield><datafield tag="210" ind1=" " ind2=" " xmlns="http://www.loc.gov/MARC21/slim"><subfield code="d">1958</subfield><subfield code="c">Dover Publications </subfield></datafield><datafield tag="300" ind1=" " ind2=" " xmlns="http://www.loc.gov/MARC21/slim"><subfield code="a">introduction to symbolic logic and its applications </subfield></datafield><datafield tag="200" ind1="1" ind2=" " xmlns="http://www.loc.gov/MARC21/slim"><subfield code="a">درآمدی بر منطق نمادین و کاربردهای آن [کتاب انگلیسی]</subfield><subfield code="a">introduction to symbolic logic and its applications</subfield><subfield code="a">Rudolf Carnap (رودلف کارناپ)</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>