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2. The acute oral toxicity of acetylsalicylic acid;Boyd;Toxicol. Appl. Pharmacol.,1959
3. The acute oral toxicity of phenacetin;Boyd;Toxicol. Appl. Pharmacol.,1959
4. The acute oral toxicity of caffeine;Boyd;Toxicol. Appl. Pharmacol.,1959
5. The acute oral toxicity of a mixture of acetylsalicylic acid, phenacetin, and caffeine;Boyd;Toxicol. Appl. Pharmacol.,1959