ابن زهر
A number of early pharmacopoeia books were written by Persian and Arab physicians. These included "The Canon of Medicine" of Avicenna in 1025, and works by Ibn Zuhr (Avenzoar) in the 12th century (and printed in 1491), and Ibn Baytar in the 14th century. The Shen-nung pen ts'ao ching (Divine Husbandman's Materia Medica) is the earliest known Chinese pharmacopoeia. The text describes 365 medicines derived from plants, animals, and minerals; according to legend it was written by the Chinese god Shennong.