Effective development and utilization of non-metallic minerals : proceedings of the Second World Congress on Non-metallic Minerals, October 17-21, 1989, Beijing, China. 1.
World Congress on Non-metallic Minerals (2 : 1989 Beijing)
Bok Språk ikke angitt 1989
| Utgitt | Beijing : International Academic Publishers , 1989
|
|---|---|
| Omfang | xviii, 332 s.
|
| Emner | |
| ISBN | 7800030857
|
