1995, Ducks Unlimited Canada, Study, Waterfowl, Winter Cover Crop Further Investigation into Field Grazing by Wigeon in Delta, British Columbia Morgan PowellDecember 4, 2020
1995, E.S. CropConsult Ltd., Field Margin, Grass Margin, Hedgerow, Report Impact of Hedgerows and Grass Margins on Insect and Weed Dispersal in Potato Fields in West Delta and Westham Island Rebecca BollwitMay 29, 2020
