Context

Context of The prescription ingredient survey; : consisting of the Ebert survey of 1885, the Hallberg survey of 1895, the Hallberg-Snow survey of 1907, the Charters survey of 1926, the Cook survey of 1930, the Gathercoal survey of 1930, the U. S. P. -N. F. survey of 1931-32, under the auspices of the American Pharmaceutical Association, the Board of Trustees of the U. S. Pharmacopoeia
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