Pears Cyclopaedia: a one volume encylopaedia published annually in the United Kingdom.
Probert Encyclopaedia: an online topical encyclopedia consisting of almost 100,000 short entries, published by Mathew Probert and based in the United Kingdom.
... there is no regulation of herbal medicines. Some herbal medicines are dangerous, some work, most are a harmless waste of money (plus a possible placebo ...