TYPE OF TEST : Mutation in microorganisms TEST SYSTEM : Microorganism - not otherwise specified DOSE/DURATION : 13 iu/mg REFERENCE : DBANAD Doklady Bolgarskoi Akademii Nauk. (Hemus, Blvd. Russki 6, Sofia, Bulgaria) V.1- 1948- Volume(issue)/page/year: 35,1733,1982