AIDS and Drugs MisuseJohn Strang & Gerry Stimson (eds) London and New York, Routledge, 1990 276 pp., £12.99 (paperback) Promoting Safer Sex: Prevention of Sexual Transmission of AIDS and other STDsMaria Paalman(Ed.)Amsterdam/Rockland, Swets and Zeitlinger bv, 1990 252 pp. Psychology in PrisonsD. J, Cooke, P. J. Baldwin & J. Howison Routledge, London, 1990 147 pp., £25.00 (hardback) AIDS and the MouthD. Greenspan, J. S. Greenspan,M. Schiodt & J. J. Pindborg Copenhagen, Munksgaard, 1990 204 pp., DK 450 (hardback) AIDS in Developing Countries-Cost Issues and Policy TradeoffsMaureen A. Lewis Et Al.Washington DC, The Urban Institute Press,1990 91 pp., £25.50 (hardback)