PT  - JOURNAL ARTICLE
AU  - Rick Williams
TI  - An open letter to the agricultural community on defining sustainability
DP  - 1990 Jan 01
TA  - Journal of Soil and Water Conservation
PG  - 91--93
VI  - 45
IP  - 1
4099  - http://www.jswconline.org/content/45/1/91.short
4100  - http://www.jswconline.org/content/45/1/91.full