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Warning: session_start(): Failed to read session data: files (path: /var/lib/php/mod_php/session) in /var/www/sites/hebbdemo/html/inc/init.php on line 239 tag:speakers [UBC PHAS Demonstration Room Catalog]
![[root]](/doku.php?id=tag:speakers&ns=&tab_files=files&do=media&tab_details=edit&image=demonstrations%3A6_optics%3A6c_diffraction%3Acover.jpg){kind=link}
