| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Unifying Concepts and Processes in Elementary Mathematics | 978-O-2O5-O5844-O (O-2O5-O5844-2) | 1977 |
M M · O. M. · O.M.M. · University of Maryland
University of Maryland Medical System, Baltimore, Maryland Robert Christensen Ph.D.