Groff, Patrick J., Phonics why and how Patrick Groff. - Morristown, N.J. General Learning Press c1977. - 278 p. 24 cm. Includes bibliographies and index. ISBN: 0382182170 LCCN: 77074536 Subjects--Topical Terms: Reading (Elementary)--Phonetic method. LC Class. No.: LB1573 / .G86 Dewey Class. No.: 372.4/145