A manual of pharmaceutical testing for the man of business and his assistants : comprising simple instructions for the testing of the chemicals of the British Pharmacopœia etc. with such materials and appliances as are in common use at the dispensing counter / by Barnard S. Proctor.

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A manual of pharmaceutical testing for the man of business and his assistants : comprising simple instructions for the testing of the chemicals of the British Pharmacopœia etc. with such materials and appliances as are in common use at the dispensing counter / by Barnard S. Proctor. Public Domain Mark. Source: Wellcome Collection.