Bettinghaus, Erwin Paul, 1930- Message preparation; : the nature of proof [electronic resource] / [by] Erwin P. Bettinghaus.. — Indianapolis, : Bobbs-Merrill, [1966]. — viii, 127 p. : illus. 21 cm. — (The Bobbs-Merrill series in speech communication,) 1.

Second ed. published in 1972 under title: The nature of proof.

Bibliography: p. 121-122.



LCCN: 66017583

Subjects--Topical Terms:
Public speaking.
Belief and doubt.

LC Class. No.: PN4121 / .B448

Dewey Class. No.: 808.51