1. BARTHA, R. and D. PRAMER: Soil Sci.100, 68 (1968).
2. BUSSEY, R.: private communication, Stauffer Chemical Company, DeGuigne Technical Center, Richmond, CA (1978).
3. HATTORI, J., K. OIZUMI, Y. SATO, K. TSUDA, T. ABE, and M. HARADA: Residue Rev.60, 39 (1976).
4. RAMANUJAM, T., L. BATISTIC, and C. BELLINCK: Rev. Ecol. Biol. Sol.15, 159 (1977).
5. ROBERTS, J.R., R. GREENHALGH and W.K. MARSHALL: Proceedings of a Symposium on Fenitrothion: The Long-Term Effects of its Use in Forest Eosystems, National Research Council of Canada, Publication No. NRCC/CNRC 16073 (1977).