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After finishing the railway technical school , he studied in the Moscow Institute of Engineers and Transport , followed by a DSc program in Moscow Engineering Physics Institute completing in 1949 , when he became a professor in Lebedev Physical Institute .
 Moscow Institute of Engineers and Transport, Moscow Engineering Physics Institute, Lebedev Physical Institute
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Moscow Institute of Engineers and Transport, Moscow Engineering Physics Institute, Lebedev Physical Institute