European Communities · European Communities / Union (EUR-OP/OOPEC/OPOCE)
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| 1984 Ec Enquiry into the Needs for Nuclear Reference Materials | 978-92-825-6840-8 (92-825-6840-7) | 1987 |
| Interlaboratory Comparison Exercise for the Determination of Uranium by Potentiometric Titration | 978-92-826-2442-5 (92-826-2442-0) | 1991 |