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Allan Lichtman - Wikipedia
Allan J. Lichtman — Harvard University Press
Allan J. Lichtman | Authors - Macmillan
The Embattled Vote in America — Harvard University Press
Books by Allan J. Lichtman (Author of The Case for Impeachment) - Goodreads
Allan J. Lichtman (Author of The Case for Impeachment) - Goodreads
Thirteen Cracks: Repairing American Democracy after Trump
The Case for Impeachment by Allan J. Lichtman | Goodreads
The Embattled Vote in America - Google Books
The Case for Impeachment - Allan J. Lichtman - Google Books