R. B · Robert B. · Robert J. Bertholf
| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Robert Duncan and Denise Levertov: The Poetry of Politics, the Politics of Poetry | Paperback | 978-0-8047-5131-5 (0-8047-5131-5) | 2006 | Albert Gelpi |
| The Letters of Robert Duncan and Denise Levertov | Hardcover | 978-0-8047-4568-0 (0-8047-4568-4) | 2003 | " |
| The Letters of Robert Duncan and Denise Levertov | Paperback | 978-0-8047-4569-7 (0-8047-4569-2) | 2003 | " |