7th IPI -Conpetition For YOuing Research Workers : Abssstraets of the 111Papers Submitted to the Competition IPI - Resarache Topics No. 12r
7th IPI -Conpetition For YOuing Research Workers : Abssstraets of the 111Papers Submitted to the Competition IPI - Resarache Topics No. 12r
International Patash INstitute, Bem;
- Bern International Patesh Institute 1983
- xx 65pp