Encyclopedia Brown #6: Encyclopedia Brown Keeps the Peace by Donald J. Sobol (19,Encyclopedia Brown, Boy Detective,English Version Encyclopedia Brown 15 Books in English,Teen Detective Reasoning,English Learning Extracurricular Reading - AliExpress,Encyclopedia Brown, Boy Detective: Sobol, Donald J.: 9780142408889: Amazon.com: Books,1976 Encyclopedia Britannica Macropedia Vol 1-19 A-Z Incomplete Set | eBay,