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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for One of Plato's "Dialogues":

APOLOGY: One of Plato's dialogues.
CRITO: One of Plato's dialogues
ION: One of Plato's "Dialogues"
ION: One of Plato's 35 dialogues