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Pavle Vujević ( 1881 – 1966 ) was a Serbian geographer and meteorologist , professor of climatology , meteorology , and mathematical geography at the University of Belgrade .
 Pavle Vujević, University of Belgrade
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
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Answer:
 Pavle Vujević, University of Belgrade