"control"的搜索结果

captured in niger west africa during the smallpox eradication and measles control program

标签: captured,in,niger,west,africa,

photograph made during smallpox eradication and measles control program in niger w africa

标签: photograph,made,during,smallpo

control health worker gripping a hand held augur and next to him atop a tree stump

标签: control,health,worker,gripping

this image depicts a pakistani malaria control worker undergoing skin patch testing

标签: this,image,depicts,a,pakistani

these were the tools used by the pakistani malaria control team when they were mixing malathion powder

标签: these,were,the,tools,used,by,t

these malaria control workers whod been spraying malathion to combat mosquito populations

标签: these,malaria,control,workers,

plate streaked with dried malathion because cookware was sprayed in an effort to control mosquitoes

标签: plate,streaked,with,dried,mala

malaria control worker mixing malathion spray powder without covering his exposed skin

标签: malaria,control,worker,mixing,

malaria control worker is demonstrating malathion spraying technique

标签: malaria,control,worker,is,demo

close up face of pakistani malaria control worker undergoing skin patch testing

标签: close,up,face,of,pakistani,mal

workers practicing vector control by digging a drainage ditch in order to help disperse standing water

标签: workers,practicing,vector,cont

this niger based primary hc mobile unit was assisting in the control of sleeping sickness

标签: this,niger,based,primary,hc,mo

stearman bi plane is spraying an insecticide during malaria control operations in savannah ga

标签: stearman,bi,plane,is,spraying,

group of dead adult mosquitoes scattered uniformly throught the field of view during a vector control study

标签: group,of,dead,adult,mosquitoes

smallpox eradication and measles control programs west africa

标签: smallpox,eradication,and,measl