Calgary Public Library
DDT (Insecticide)
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http://bibfra.me/vocab/lite/Topic
Label
DDT (Insecticide)
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Narrower
5
DDT (Insecticide) + Heath aspects
DDT (Insecticide) + Environmental aspects + History
DDT (Insecticide) + Environmental aspects
DDT (Insecticide) + Toxicology
DDT (Insecticide) + Physiological effect
Focus of
2
DDT (Insecticide) -- Juvenile fiction
DDT (Insecticide) -- Fiction
Sub focus of
5
DDT (Insecticide) + Physiological effect
DDT (Insecticide) + Heath aspects
DDT (Insecticide) + Environmental aspects
DDT (Insecticide) + Toxicology
DDT (Insecticide) + Environmental aspects + History -- 20th century
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