S Stepniak: 2 books

I det lille Værtshus i Genf, hvor Russerne plejede at have deres Tilhold, nød Helene hurtigt sit beskedne Aftensmaaltid uden som sædvanlig at drikke en Kop Kaffe dertil — en Luksus, hun ikke havde nægtet sig lige siden den Dag, hun havde faaet sine Elever i Russisk. Men i Aften maatte hun skynde...

Fluorine is best known for its role in the prevention of cavities and in improving oral and bone health however equally there are millions of people around the world suffering from dental fluorosis due to chronic exposure to high levels of fluoride in drinking water. This volume, written by leading...