Elbon "Ciba" (cinnamolyl-p-oxyphenylurea) in hay-fever.

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<p>Blotter issued by Ciba and The Clayton Aniline Co., Ltd. advertising Elbon "Ciba", an antihistamine used in the treatment of hayfever.</p>

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Elbon "Ciba" (cinnamolyl-p-oxyphenylurea) in hay-fever.

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