Explains in non-technical terms how to use the dichroscope to identify colored gems, and how to separate natural gems from imitations, treated gemstones ...

This year we celebrate the 150th anniversary of Mendeleev's first publication of the Periodic Table of Elements. This book offers an original viewpoint ...

Oral lichen planus is a chronic inflammatory cutaneous-mucosal dermatosis affecting the skin, appendages and mucous membranes, including the oral mucosa. ...

Esta monografia sobre as Pessoas Politicamente Expostas (PEP) num Estado Pós-Colonial como a Nigéria é o resultado de esforços ...

Stem cells hold great promise for cell therapy, tissue engineering, regenerative medicine and pharmaceutical and biotechnological applications. This book ...

This book originates in a series of contributions to the 1983 Systems Science Seminar at the Computer Science Department of the German Armed Forces University ...

Behind the glittering image of 'Marvellous Melbourne' there existed in the popular imagination another, very different, picture of the colonial metropolis. ...

There are two types of evolution : collective evolution and individual conscious evolution. 'Evolution' implies unconscious collective progress so it would ...

Faith Made Easy, Or What To Believe And Why: A Popular Statement Of The Doctrines And Evidences Of Christianity In The Light Of Modern Research And Sound ...