| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Permissible Explosion-Proof Electric Motors for Mine: Conditions and Requirements for Test and Approval | Hardcover | 978-0-656-15825-6 (0-656-15825-5) | 2018 |
| Permissible Explosion-Proof Electric Motors for Mine: Conditions and Requirements for Test and Approval | Paperback | 978-1-331-93929-0 (1-331-93929-1) | 2018 |
H. C. · H. Clark · H.H. · Herbert H. Clark · Herbert H. H. Clark · Homer H. Clark · Homer H. Clark Jr. · Homer Harrison Clark