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The structure of p-bromochlorobenzene has been investigated by Hendricks1, who found the spacegroup to be P21/a, and the number of molecules in the unit cell to be two. In an exactly repeating ...

Letter Published: 28 December 1940 Para-Amino Benzoic Acid as a Bacterial Growth Factor SYDNEY D. RUBBO & J. M. GILLESPIE Nature 146, 838 (1940) Cite this article ...