Smith, E Crystalline Visnagan. [electronic resource] - Science (New York, N.Y.) May 1952 - 520-1 p. digital Publication Type: Journal Article ISSN: 0036-8075 Standard No.: 10.1126/science.115.2993.520 doi Subjects--Topical Terms: ChromansHeart--drug effectsHumansKhellin--pharmacology