Screening techniques, strain improvement (mutation/recombinant DNA), and preservation methods. Fermentation
: The identification and optimization of productive microbial strains from natural sources. strain improvement (mutation/recombinant DNA)
: You can borrow the full digital scan of the 460-page book for free with a registered account at the Internet Archive (1968 Edition) Open Library : A companion to the Internet Archive, the Open Library the Open Library