@book{9774, author = {Shepard, Paul and Shepard, Florence R.}, title = {Encounters with nature}, publisher = {Island Press [for] Shearwater Books}, year = {1999}, address = {Washington, D.C.}, edition = {1st ed.}, url = {http://www.loc.gov/catdir/enhancements/fy0666/99033862-d.html} }