Comprehensive reference source for the metaphysical properties and uses of over a thousand gemstones and minerals. Based on information channeled from Michael,

This is a review of 190 years of literature on copper and its alloys. It integrates information on pigments, corrosion and minerals, and discusses environmental

The Oxford Dictionary of English Grammar is a straightforward and accessible A-Z guide to the diverse and often complex terminology of English grammar. It conta

Organisations are communities. Increasingly the leaders of those communities are drawing on the services of psychologists to help them realise the potential of

Presents lessons in learning English grammar.