| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| School without Walls: Philadelphia's Parkway Program | Paperback | 978-0-03-085287-9 (0-03-085287-0) | 1972 | John Bremer |
| School without Walls: Philadelphia's Parkway Program | Hardcover | 978-0-03-085317-3 (0-03-085317-6) | 1972 | " |