Matches in Library of Congress for { ?s ?p Astronomical observatories Congresses.. }
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- 2001267218 subject "Astronomical observatories Congresses.".
- 2003266811 subject "Astronomical observatories Congresses.".
- 2005299639 subject "Astronomical observatories Congresses.".
- 2006286947 subject "Astronomical observatories Congresses.".
- 2007270631 subject "Astronomical observatories Congresses.".
- 2010286572 subject "Astronomical observatories Congresses.".
- 2011288051 subject "Astronomical observatories Congresses.".
- 2011288472 subject "Astronomical observatories Congresses.".
- 2011377543 subject "Astronomical observatories Congresses.".
- 2012941433 subject "Astronomical observatories Congresses.".
- 95083426 subject "Astronomical observatories Congresses.".
- 99192205 subject "Astronomical observatories Congresses.".