(Q30119322)
Statements
Elka Pencheva - Professor of Hydrogeochemistry and Doctor of sciences.jpg
1,616 × 2,110; 645 KB
1,616 × 2,110; 645 KB
0 references
1933
0 references
Sitelinks
Wikipedia(1 entry)
- bgwiki Елка Пенчева
Bulgarian geologist