'Induced and other variations in bacterial cultures Part I The Chemical Basis of the Changes Part II General Survey of Changes Produced in Bact Lacis aerogenes (Aerobacter aerogenes) by Ultra-Violet Light and some other Mutagenic Agents Part III. Recovery of Normal Growth Rates by Slow-Growing Mutants of Bact Lactis Aerogenes Part IV Restoration of normal biochemical reactions in fermentative mutants of Bact lactis aerogenes' by A C R Dean and Sir Cyril Hinshelwood Preprinted from the Journal of the Chemical Socierty May 1951 pages 1157-1177 1951