%0 Journal Article %A Edwards, G. F. St L. %A Holt, G. %A Macdonald, K. D. %T Mutants of Aspergillus nidulans Impaired in Penicillin Biosynthesis %D 1974 %J Microbiology, %V 84 %N 2 %P 420-422 %@ 1465-2080 %R https://doi.org/10.1099/00221287-84-2-420 %I Microbiology Society, %X %U https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-84-2-420