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Books about Zetzel:
Zetzel Psychiatric Journal Articles, 1948-1971 by Elizabeth R. Zetzel (1948)
On the Commonwealth and On the Laws (Cambridge Texts in the History of Political Thought) [Hardcover]  (... (1999)
Capacity for Emotional Growth by Zetzel, Elizabeth R. published by International Universities Press Hardcover (Apr 1, 1971)
Wiki information Zetzel:
James E. G. Zetzel is a 1997 Guggenheim Fellow in Humanities.