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by Jarvis, Peter J.
by Northrop; Robert B.
by Gelletly, Leeanne
by Herendeen, Robert A.
by Edited by Charles Perrings , Karl-Goran Maler , Carl Folke , C. S. Holling , Bengt-Owe Jansson
by Carolan,Michael
by Ploutz, Paul
by Timothy, Dallen J.; Boyd, Stephen W.
by B. N. Sarkar
by Beeby, Alan; Brennan, Anne-Maria