Service collections - their functions, B.E.Kirsop; general introduction to maintenance methods, J.J.S.Snell; maintenance of bacteria by freeze-drying, R.H.Rudge; maintenance of bacteria on glass beads at -60C to -76C, D Jones et al; maintenance of bacteria in gelatin discs, J.J.S.Snell; maintenance of industrial and marine bacteria and bacteriophages, T.R.Dando and I.J. Bousfield; low temperature freezing of microorganisms on silica gel, T.M.Sidyakina; maintenance of anaerobic bacteria, C.S.Impey and B.A.Phillips; maintenance of phototrophic bacteria, K.A.Malik; maintenance of methanogenic bacteria, H.Hippe; maintenance of leptospira, S.A.Waitkins; maintenance of microorganisms by simple methods, K.A.Malik; maintenance of filamentous fungi, D.Smith; maintenance of yeasts, B.E.Kirsop; maintenance of algae and protozoa, M.R.McLellan et al; maintenance of parasitic protozoa by cryopreservation, E.R.James; animal cells, A.Doyle and C.B.Morris; maintenance of plant tissue cultures, L.A.Withers; appendix 1 - documentation; appendix 2 - list of suppliers.