Supplement to Coden for periodical titles (including non-periodical titles and deleted coden); an aid to the storage and retrieval of information and to communication involving journal references. Prepared and maintained for the ASTM Special Committee on Numerical Reference Data by the Science Information Services, Franklin Institute Research Laboratories. Jennifer G. Blumenthal, editor. Marta Karaman, assoc. editor. Alec Peters, manager. (ASTM data series, DS23A-S1)