Dr. Russell A. Langley · R. L · R Langley · Russell L.
David & Charles · Dover Publications
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Practical Statistics for Non-mathematical People | 978-0-7153-5039-3 (0-7153-5039-0) | 1971 |
| Practical Statistics Simply Explained | 978-0-486-22729-0 (0-486-22729-4) | 1971 |