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How Police Dogs Learn to Detect When scent training on a substance like nicotine, handlers present an item or container bearing the scent to the dog

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"A significant amount of the online sales that have continued to happen in British Columbia specifically are dominated by unregulated operators as opposed to licensed retailers," she told CBC News, adding that it's tough for retailers to compete with the illegal market online because it sells products for as low as half the price

[Google Scholar] Mello NK, Mendelson JH, Knudson IM, Negus SS, Kelly M