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Table 1 Years of patent and early use of relevant OCPs [5]

From: The use of ‘poisonous insecticidal solutions’ in bookbinding: coping with historic pesticide treatments in the archive

Year described

Year of US patent

Federal registration

Agent

1942

1944

1952

DDT

1948

1954

1948

Dieldrin

1951

1954

1954

Endrin

1825

1940

1952

γ-HCH (Lindane)

1948

1948

1948

PCP