<?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>01742cam a2200385Ia 4500</leader><controlfield tag="001">005979651</controlfield><controlfield tag="003">MiAaHDL</controlfield><controlfield tag="005">20121218000000.0</controlfield><controlfield tag="006">m        d        </controlfield><controlfield tag="007">cr bn ---auaua</controlfield><controlfield tag="008">081217s1947    tnua     bt  f000 0 eng d</controlfield><datafield tag="027" ind1=" " ind2=" "><subfield code="a">MDDC-771</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">sdr-ufdc020664978</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">sdr-miu.990059796510106381</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(OCoLC)288607926</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">MDDCS</subfield><subfield code="c">MDDCS</subfield><subfield code="d">OCLCQ</subfield><subfield code="d">FUG</subfield></datafield><datafield tag="086" ind1="0" ind2=" "><subfield code="a">Y 3.At 7:8/771</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Fermi, E.</subfield></datafield><datafield tag="245" ind1="1" ind2="2"><subfield code="a">A thermal neutron velocity selector and its application to the measurements of the cross section of boron /</subfield><subfield code="c">by E. Fermi, J. Marshall, and L.W. Marshall.</subfield></datafield><datafield tag="260" ind1=" " ind2=" "><subfield code="a">Oak Ridge, Tenn. :</subfield><subfield code="b">Atomic Energy Commission,</subfield><subfield code="c">[1947]</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">6 p. :</subfield><subfield code="b">ill. ;</subfield><subfield code="c">27 cm.</subfield></datafield><datafield tag="490" ind1="0" ind2=" "><subfield code="a">United States. Atomic Energy Commission. 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