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        <unittitle>Astrophysics 517</unittitle>
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        <unittitle>Physical Processes in Interstellar Medium</unittitle>
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          <extent altrender="materialtype spaceoccupied">1 folder</extent>
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        <unitdate datechar="creation" normal="1977/1977" type="inclusive">1977</unitdate>
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    <c id="C0682_c00951" level="file">
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        <unittitle>Dynamics of Interstellar Gas and Formation of Stars</unittitle>
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          <extent altrender="materialtype spaceoccupied">1 folder</extent>
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        <unitdate calendar="gregorian" datechar="creation" era="ce">dates not examined</unitdate>
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  <c id="C0682_c00952" level="file">
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      <unittitle>Annual Review of Astronomy and Astrophysics</unittitle>
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      <did>
        <unittitle>Ultraviolet Studies of the Interstellar Gas" by L. Spitzer Jr. and E.B Jenkins, Vol. 13, 1975 (reprint and notes)</unittitle>
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        <unittitle>Theories of the Hot Interstellar Gas by L.Spitzer Jr., Vol.28, 1990 (reprint and notes)</unittitle>
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      <unitdate datechar="creation" normal="1949-01-01/1997-12-31" type="inclusive">1949-1997</unitdate>
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        <unittitle>Correspondence</unittitle>
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          <unittitle>American Society for Advancement of Science</unittitle>
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            <extent altrender="materialtype spaceoccupied">1 folder</extent>
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          <unitdate datechar="creation" normal="1949/1951" type="inclusive">1949-1951</unitdate>
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          <unittitle>International Astronomical Union</unittitle>
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            <extent altrender="materialtype spaceoccupied">1 folder</extent>
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          <unittitle>Institute for Advanced Studies</unittitle>
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        <did>
          <unittitle>International Academy of Astronautics</unittitle>
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            <extent altrender="materialtype spaceoccupied">1 folder</extent>
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        <did>
          <unittitle>American Astronomical Society</unittitle>
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            <extent altrender="materialtype spaceoccupied">1 folder</extent>
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          <unittitle>American Philosophical Society</unittitle>
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          <unittitle>American Academy of Art and Sciences</unittitle>
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        <did>
          <unittitle>American Astronomical Society</unittitle>
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            <extent altrender="materialtype spaceoccupied">1 folder</extent>
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          <unitdate calendar="gregorian" datechar="creation" era="ce">undated</unitdate>
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        <did>
          <unittitle>International Astronomical Union</unittitle>
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            <extent altrender="materialtype spaceoccupied">1 folder</extent>
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          <unittitle>National Academy of Science: Astronomy</unittitle>
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            <extent altrender="materialtype spaceoccupied">1 folder</extent>
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