Richard O. · Richard Orodenker · Richard Ortmann
Cambridge University Press · Open University Press
| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Art and Environment: Natural Sound Unit 3 | Paperback | 978-0-335-06202-7 | 1976 |
| Electronc Music Schools Cassette | Audio Cassette | 978-0-521-23661-4 | 1982 |
| Electronic Music for Schools | Hardcover | 978-0-521-22994-4 | 1982 |
| Electronic Music for Schools | Paperback | 978-0-521-28026-6 | 1981 |