RT Journal Article SR Electronic T1 A Quantity of Engaging Work to be Done JF Ecological Restoration FD University of Wisconsin Press SP 97 OP 104 DO 10.3368/er.9.2.97 VO 9 IS 2 A1 Higgs, Eric S. YR 1991 UL http://er.uwpress.org/content/9/2/97.abstract AB