E.E. " · E. Elder · K.P. · Keith E. Elder
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| PPI2PASS HVAC and Refrigeration Six-Minute Problems, 1st Edition - Comprehensive Practice Problems for the NCEES PE Mechanical HVAC & Refrigeration Exam | 978-1-59126-552-8 (1-59126-552-5) | 2017 |
| Six-Minute Solutions for Mechanical PE Exam HVAC and Refrigeration Problems, 2nd Ed | 978-1-59126-146-9 (1-59126-146-5) | 2008 |
| Six-Minute Solutions for Mechanical PE Exam HVAC and Refrigeration Problems | 978-1-59126-013-4 (1-59126-013-2) | 2005 |