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law enforcement officer demonstrates hunting safety techniques to hunters

law enforcement officer demonstrates hunting safety techniques to hunters

标签: law,enforcement,officer,demons 浏览: 1
micrograph demonstrates the histologic changes in human skin infected with smallpox using h e stain

micrograph demonstrates the histologic changes in human skin infected with smallpox using h e stain

标签: micrograph,demonstrates,the,hi 浏览: 1
demonstrates the use of ddt hand spraying equipment

demonstrates the use of ddt hand spraying equipment

标签: demonstrates,the,use,of,ddt,ha 浏览: 0
demonstrates how a smallpox vaccinee prepares a gauze bandage in order to cover her vaccination site

demonstrates how a smallpox vaccinee prepares a gauze bandage in order to cover her vaccination site

标签: demonstrates,how,a,smallpox,va 浏览: 0
the villagers are playing a game that demonstrates why it is important for women

the villagers are playing a game that demonstrates why it is important for women

标签: the,villagers,are,playing,a,ga 浏览: 1
man demonstrates how to set up a mosquito bed net to protect from getting malaria

man demonstrates how to set up a mosquito bed net to protect from getting malaria

标签: man,demonstrates,how,to,set,up 浏览: 0
search and rescue team demonstrates how to use a sawzall to cut through metal

search and rescue team demonstrates how to use a sawzall to cut through metal

标签: search,and,rescue,team,demonst 浏览: 1
female worker demonstrates the new heavy duty running stitch sewing machine

female worker demonstrates the new heavy duty running stitch sewing machine

标签: female,worker,demonstrates,the 浏览: 1

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