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"Compendium of Materia Medica" contained nearly 1,900 substances, which included 374 that had not appeared in other works. Not only did it list and describe the substances, but it also included prescriptions for use – about 11,000 - 8,000 of which were not well known. The "Compendium of Materia Medica" also had 1160 illustrated drawings to aid the text.