| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Use of Ultrasonic Techniques for Reducing the Environmental Impact of the Pickling Operation for Carbon, Low Alloy and Stainless Steels: Final Report | 978-92-828-1872-5 (92-828-1872-1) | 1997 |
Dr John Howells · J.G. Howells · J. H. · J. N. H Howells · Jacqui Howells · Jeremy Howells · John, Dr Howells · John G. Howells · John Howells · John M. Howells · R.J. Howells