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ALSO RECEIVED Database of tropical tree seed research research (database and user manual) compiled by P B Tompsett & R Kemp 1996 ISBN 1 900347 06 7 and ISBN 1 900347 05 9 Royal Botanic Gardens Kew, Richmond, Surrey, UK Testing criteria and indicators for the sustainable management of forests: phase 1 1996 217pp ISBN 979 8764 03 X Centre for International Forestry Research (CIFOR), PO Box 6596, JKPWB Jakarta 10065 INDONESIA Tree-crop interactions: a physiological approach edited by Chin Ong & Peter Huxley 1996 416pp price UKL25.00 ISBN 0 85198 987X CAB International, Wallingford, Oxon OX10 ODE, UK Vetiver grass for soil and water Conservation, kind rehabilitation, and embankment stabilization edited by . Richard Grimshaw & Larisa Helfer 281 pp. ISBN 0 8213 3144 2 The World Bank, 1818 H Street N W Washington, DC 20433, USA Developing on-farm research - the broad picture by Nora McNamara & Stephen Morse 1996 price UKL9.99 ISBN 1 897685 88 2 On Stream Publications ltd. Cloghroe, Blarney, Co. Cork, IRELAND