<?xml version="1.0" encoding="UTF-8"?><collection xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.loc.gov/MARC21/slim" xsi:schemaLocation="http://www.loc.gov/MARC21/slim http://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd"><record><leader>01714nam a2200397Ka 4500</leader><controlfield tag="001">007293338</controlfield><controlfield tag="003">MiAaHDL</controlfield><controlfield tag="005">20250726000000.0</controlfield><controlfield tag="006">m        d        </controlfield><controlfield tag="007">cr bn ---auaua</controlfield><controlfield tag="008">090824s1959    caua     bm  f000 0 eng d</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(MiU)990072933380106381</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">sdr-miu.990072933380106381</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="z">(MiU)MIU01000000000000007293338-goog</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(OCoLC)432713214</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="z">(MiU)Aleph007293338</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">UCRLS</subfield><subfield code="c">UCRLS</subfield><subfield code="d">UtOrBLW</subfield></datafield><datafield tag="049" ind1=" " ind2=" "><subfield code="a">UCRA</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Perkins, Walton A.,</subfield><subfield code="c">III.</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Positive-pion production by negative pions /</subfield><subfield code="c">by Walton A. 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