This booklet is an excellent introduction and explanation of the famed Emerald Tablet. It gives a translation of the tablet and an intellingent clear explanatory essay. Cowlan unpacks the text's symbolic meanings as a code for the alchemists.  This rendering has been compiled consulting both the Arabic and Latin texts.
Frankfurt: Alembic, 2008.  Booklet, 26 pages. New. Signed by the author.