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In The Making of the Atomic Bomb , author Richard Rhodes describes the Kaptiza Club : " As Kapitza had settled in at Cambridge he had noticed what he considered to be an excessive and unproductive deference of British physics students to their seniors .
 Richard Rhodes, Kapitza
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Richard Rhodes, Kapitza