Field exposure and biological effects of grain farmers during carbofuran application for grasshopper controlD. Johnston, Louise P. Horstman, K. Yoshida, T. E. Code, Lawrence M. Brusnyk, David A. Westworth · First published 1987Open the Tome
Effects of seismic activity on the behavior and activity of muskrats on the Mackenzie DeltaDavid A. Westworth · First published 1980Open the Tome
Impact of seismic activity on muskrat populations on the Mackenzie DeltaDavid A. Westworth, Canada. Indian and Northern Affairs, Arctic Land Use Research Program (Canada), Northern Affairs Program (Canada). Environment Division, EPEC Consulting Western Ltd · First published 1977Open the Tome
