The Nature of fermentation fluids / Hisahura Taguchi -- Separation of cells from culture media / Shuichi Aiba, Masaharu nagatani -- A Simplified kinetik approach to cellulose-cellulase system / T.K. Ghose, K. Das -- Production and application of enzymes / W.T. Faith, C.E. Neubeck, E.T. Reese -- Overproduction of microbial metabolites and enzymes due to alteration of regulation / Arnold L. Demain -- The Production of biomass from hydrogen and carbon dioxide / H.G. Schlegel, R.M. Lafferty -- Liquid and Solid hydrocarbons / A. Einsele, A. Fiechter.