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Semicentennial Definition & Meaning - Merriam-Webster
Anniversary - Wikipedia
United States Semiquincentennial - Wikipedia
SEMICENTENNIAL Definition & Meaning - Dictionary.com
semicentennial - Wiktionary, the free dictionary
Semicentennial - definition of semicentennial by ... - The Free …
SEMICENTENNIAL definition and meaning | Collins English …
Semicentennial - Definition, Meaning & Synonyms
Semicentennial Definition & Meaning - YourDictionary
semicentenary - Wiktionary, the free dictionary