Valeriana eichle riana (C. A. Muller) Graebner pollen are described and documented, used optical and scanning eletronic microscopy. We found that the current de
Studying the landslide and rockfall in Yemen still in its preliminary stage. AI Gayah rockfall site is a chronic problem as many other areas in the Republic of
The main task of provenance analysis is to determine the source of sediments and the position of parent rocks.Provenance analysis may find out the relationship