TY - RPRT TI - Rifamycins: strain improvement program. AU - R Lal AU - M Khanna AU - H Kaur AU - N Srivastava AU - K K Tripathi AU - S Lal PY - 1995 DO - 10.3109/10408419509113532 UR - https://pubmed.ncbi.nlm.nih.gov/7576149/ ID - 7576149 ER -