1953 Volume 48 Issue 12 Pages 490-486
Each of 11 in 27 isolated strains has been decided to belong to Streptomyces erythrochromogenes (S 10, S 15), St. griseolus (Y 1, S 9), St. exfoliatus (S 7, S 17, S 18), St. novaceaesareae (S 6, S 14), and Micromonospora chalcea (S 11), Micro. parva (Y 2).