Antique gems and rings

Abstract Engraved gems were used by the Greeks as seals and amulets, but were primarily valued as ornaments. Their iconography was drawn from a wide range of moti...

The impact of climatic change on human affairs has been demonstrated dramatically in past years. Climatic extremes have placed increasing pressure on world food supplies leading to...

Abstract This is a reissue of a classic text, which includes the author's own corrections and provides a very accessible, self contained introduction to the classica...