Penicillins - analysis

The chemistry of penicillin : report on a collaborative investigation by American and British chemists under the joint sponsorship of the Office of Scientific Research and Development, Washington, D.C., and the Medical Research Council, London / compiled under the auspices of the National Academy of Sciences, Washington, D.C., pursuant to a contract with the Office of Scientific Research and Development ; editorial Board: Hans T. Clarke, John R. Johnson, Sir Robert Robinson.