%0 Book %A Doran, J. W. %E Doran, J. W. %I Soil Science Society of America %D 1994 %C Madison, WI %G englisch %B SSSA special publication ; %@ 089118807X %@ 9780891188070 %T Defining soil quality for sustainable environment: symposium: proceedings : Minneapolis, MN, 04.11.92-05.11.92.