The toxicity of caffein: an experimental study on different species of animals Salant, William creator Rieger, J. B. joint author. contributor text book Washington Govt. Print. Off 1912 1912
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ENG Caffein Caffeine Physiological effect RM666.C2S3 .A1 no.148 Bulletin (United States. Bureau of Chemistry), no. 148 https://www.biodiversitylibrary.org/bibliography/44155 13605868 agr12000679 10.5962/bhl.title.44155 DLC