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Severity: Notice
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Filename: controllers/presentation.php
Line Number: 875
Severity: Notice
Message: Trying to get property of non-object
Filename: controllers/presentation.php
Line Number: 875
Author(s):
1. Vesna Petrović, VISOKA TEHNIČKA ŠKOLA STRUKOVNIH STUDIJA U NOVOM SADU, Serbia
2. Vojkan Zoric, Univerzizet DŽon Nezbit, Fakultet za civilno vazduhoplovstvo, Beograd, Serbia
3. Borislav Simendic, Serbia