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PDFPage 657-b1
. 1973 Apr;132(4):657.b1.
Preparation of gram quantities of a purified R-factor-mediated penicillinase from Escherichia coli strain W3310
PMCID: PMC1177639
This corrects the article "Preparation of gram quantities of a purified R-factor-mediated penicillinase from Escherichia coli strain W3310" in volume 130 on page 55.