الفهرس 
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Abstract
The types and amounts of chemicals used by man in industry, agriculture and transport have increased greatly in the last half-century when these chemicals are absorbed or inhaled in large amounts, through direct industrial exposure, several toxic effects upon workers can result unless effective control measure are introduced and maintained. Acute industrial intoxications of this kind are now rare due to the enactment and enforcement of control legislation based on advances in industrial hygienes and toxicology.