1. Reports of new and modified registration in Canada — 2,4-D (March 1966);Agriculture Canada,1969
2. Loss of 2,4-D in washoff from cultivated fallow land;Barnett;Weeds,1967
3. Occurrence of 2,4,5-T and picloram in surface run-off water in the blacklands of Texas;Bovey;J. Environ. Qual.,1974
4. 2,4-D levels in the South Saskatchewan River in 1973 as determined by a GLC method;Choi;J. Environ. Sci. Health,1976
5. Agricultural watershed studies, Great Lakes Drainage Basin, Canada;Coote,1978