Downes

Monitoring Ecological Impacts: Concepts and Practice in Flowing Waters by Barbara J. Downes,Leon A. Barmuta,Peter G. Fairweather,Daniel P. Faith,Michael J. Keough,P. S. Lake,Bruce D. Mapstone,Gerry P. Quinn Cambridge University Press Paperback 12 June 2008 from£52.00 | RRP: ~~£43~~
Le Francais d'Aujourd'hui: C.S.E. Tchrs' Pt. 4 (New School) by Peter B. Holdsworth,P.J. Downes,E.A. Griffith,P.B. Houldsworth Hodder Arnold H&S Paperback 1 May 1970 from£3.64 | RRP: ~~£2.25~~