@incollection{,
	
					
					
					4D04A4B2B9F66E32A511B5CE11E129BE
				,
	author={{A.Alouani}},
	journal={{Global Journal of Researches in Engineering}},
	journal={{GJRE}}2249-45960975-586110.34257/gjre,
	address={Cambridge, United States},
	publisher={Global Journals Organisation}1751121
}

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		,
	title={{}}
	
	
		,
	journal={{Miner. Eng}}
		
			15
			
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	year={2002}
		
	

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		,
	title={{Aplan, ?Evaluation of chemical and operational variables for the flotation of a copper ore Part I-collector concentration, frother concentration, and air flow rate?}}
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	author={{
			VDSmar
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			FF
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}

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			DJBradshaw
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	year={2005}
		
	

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@incollection{b5,
	
	
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			SSong
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@incollection{b8,
	
	
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@incollection{b9,
	
	
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	author={{
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			KArbaoui
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	year={2017}
		
	

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@incollection{b10,
	
	
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	year={2007}
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@incollection{b11,
	
	
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@incollection{b13,
	
	
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@incollection{b14,
	
	
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	year={2014}
		
	

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@incollection{b15,
	
	
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@incollection{b16,
	
	
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@book{b17,
	
	
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	title={{?Design of experiments for engineers and scientists?}}
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	year={2003}
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	publisher={Butterworth-Heinemann}
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	address={New York}
		
	

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@incollection{b18,
	
	
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			P
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	year={2012}
		
	

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@incollection{b19,
	
	
		,
	title={{Pal, ?Development of pH-sensitive tamarind seed polysaccharide-alginate composite beads for controlled diclofenac sodium delivery using response surface methodology?}}
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	author={{
			AKNayak
		} and {
			D
		}}
		
	
	
		,
	journal={{International Journal of Biological Macromolecules}}
		
			49
			
			,
	year={2011}
		
	

}