| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Report of the fifteenth session of the Intergovernmental Group on Hard Fibres to the Committee on Commodity Problems, Rome, 20-22 February 1980 | 978-92-5-100905-5 (92-5-100905-8) | 1980 |
| Report of the sixteenth session of the Intergovernmental Group on Hard Fibres to the Committee on Commodity Problems, Salvador, Bahia, Brazil, 25-30 March 1981 | 978-92-5-101072-3 (92-5-101072-2) | 1981 |