Works on the poisonous influence of individual chemical substances on man and animals are entered under the substance with the subdivision Toxicology, e.g. Mercury--Toxicology; Phosphorus--ToxicologyWorks on the effect of poisons on plants are entered under Plants--Effect of poisons on; Plants--Effect of arsenic on; and similar headings --individual poisons; also headings beginning with the word Poison
--subdivision Toxicology under individual chemicals and other substances and groups of chemicals and other substances for works on their poisonous effect on human beings or animals, e.g. Copper--Toxicology; Venom--Toxicology
