SYMLOG: A System for the Multiple Level Observation of Groups - Robert Freed Bales, Stephen P. Cohen, Stephen A. Williamson - Google Books
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Interaction Process Analysis: A Method for the Study of Small Groups (Classic Reprint): Robert Freed Bales: 9780265610046: Amazon.com: Books
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SYMLOG A System for the Multiple Level Observation of Groups | Robert F. Freed Bales | First Edition; First Printing
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