209438
The most significant post-1934 addition was a 63-page supplemental section contributed by Gaston Waringhien to the fourth edition in 1953 .
 Gaston Waringhien
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Gaston Waringhien