TYPE OF TEST : Mutation in microorganisms TEST SYSTEM : Bacteria - Escherichia coli DOSE/DURATION : 500 ppm/3H REFERENCE : AMNTA4 American Naturalist. (Univ. of Chicago Press, Journals Div., POB 37005, Chicago, IL 60637) V.1- 1867- Volume(issue)/page/year: 85,119,1951