@incollection{,
	
					
					
					481B8DBF68DB9376FFD655DA8050B95B
				,
	author={{HansAgarwal} and {AnshikaJain} and {KapilGoyal} and {SumiranGupta} and {Dayalbagh Educational Institute}},
	journal={{Global Journal of Researches in Engineering}},
	journal={{GJRE}}2249-45960975-586110.34257/gjre,
	address={Cambridge, United States},
	publisher={Global Journals Organisation}2015765
}

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}

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	year={05 09 2013}
		
	
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	,
	note={Tractus3D. Accessed 18 09 2019}

}

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	author={{
			ASödergård
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}

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	title={{What Research Says About The Effectiveness of Face Masks?}}
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	author={{
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	journal={{HEALTH JOURNAL}}
		
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	year={2018}
		
	

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	title={{Papers about effectiveness of basic masks #masks4all}}
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			*
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	year={2013}
		
	
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	note={JAIR)}

}

@incollection{b8,
	
	
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	author={{
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	journal={{The Annals of Occupational Hygiene}}
		
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}

@incollection{b9,
	
	
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	title={{Keep your distance: A new video from the Bauhaus-Universität Weimar illustrates how germs can spread through the air}}
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	author={{
			AWakoya
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	,
	note={Accessed 03 06 2020}

}

@incollection{b10,
	
	
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	title={{Effectiveness of Masks and Respirators Against Respiratory Infections in Healthcare Workers: A Systematic Review and Meta-Analysis}}
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	author={{
			CF Y M S F L C C TVittoria Offeddu
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	journal={{Clinical Infectious Diseases}}
		
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	author={{
			FJabr
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	note={It's Time to Face Facts, America: Masks Work. Accessed 04 06 2020}

}

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	title={{Effectiveness of Surgical and Cotton Masks in Blocking SARS-CoV-2: A Controlled}}
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	editor={
			MM
			-CK M J Y K P
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	note={Comparison in 4 Patients," Annals of internal madicine, 06 04 2020}

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	author={{
			KGiang
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	booktitle={{3D Hubs: Local 3D printing services}}
				
	
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	author={{
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			Shah
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	journal={{IJEDR}}
		
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	year={2014}
		
	

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@incollection{b17,
	
	
		,
	title={{Quadcopter for Rescue Missions and Surveillance}}
		,
	author={{
			TN C PSrivastava
		}}
	
	
		,
	journal={{IOSR Journal of Computer Engineering}}
		
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	year={2017}
		
	

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	title={{Quadrotor Helicopter Flight Dynamics and Control}}
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	author={{
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			,
	publisher={American Institute of Aeronautics and Astronautics}
		
	

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}