Text ( visual ) : unmediated Ordering constraints in phonology / by Gregory Keith Iverson. -- Ann Arbor, Mich. : Xerox University Microfilms , 1976. -- 170 leaves ; 21 cm. -- Originally presented as the author's thesis (Ph. D.)--University of Minnesota, 1974 ; Bibliography: p. 164-170. -- (BA60360890) ; https://ci.nii.ac.jp/ncid/BA60360890 Author Heading(s): Iverson, Gregory K.