The role of voluntary programs. Fiske, W., G. D'Souza, J. Fletcher, T. Phipps, W. Bryan, and E. Prigge. D'Souza, G., D. Cyphers, and T. Phipps. 1993. Factors affecting the adoption of sustainable agricultural practices. Fletcher, Jerald J., and Tim T. Phipps.
Data needs to assess environmental quality issues related to agriculture and rural areas.