R. S. · Robert S. · Robert W. · W.S.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Nondestructive Testing Intrtoduction | 978-1-886630-00-0 (1-886630-00-3) | 2000 |
| Nondestructive Testing Radiography | 978-1-886630-08-6 (1-886630-08-9) | 1999 |
| Nondestructive Testing Ultrasonic | 978-1-886630-05-5 (1-886630-05-4) | 1999 |