@incollection{,
	
					
					
					4C1D9933095E475AA20BE9258634F6C8
				,
	author={{Ayuk ElizabethOrock} and {A. B.Fonge} and {E. M.Shemang} and {M.Zhai} and {C. E.Suh}},
	journal={{Global Journal of Human Social Sciences}},
	journal={{GJHSS}}2249-460X0975-587X10.34257/GJHSS,
	address={Cambridge, United States},
	publisher={Global Journals Organisation}2241935
}

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	title={{Use of bio-monitors to assess the atmospheric changes}}
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	author={{
			SAhmad
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			MDaud
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			IHQureshi
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	year={2007}
		
	

}

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		,
	title={{Volcanic plume monitoring at Mount Etna by diffusive (passive) sampling}}
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}

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	title={{Factors to consider for trace element deposition bio-monitoring surveys with lichen transplants}}
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			FCarrot
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			LDaudin
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}

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		,
	title={{Determination of atmospheric heavy metals using two lichen species in Katni and Rewa cities}}
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	author={{
			RBajpai
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			SNayaka
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			32
			
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	year={2011}
		
	

}

@incollection{b4,
	
	
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	title={{Accumulation and toxic effect of arsenic and other heavy metals in a contaminated area of West Bengal, India, in the lichen Pyxine cocoes}}
		,
	author={{
			RBajpai
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			DUpreti
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}

@incollection{b7,
	
	
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	title={{Lichens and air pollution}}
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@incollection{b26,
	
	
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			A
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	title={{Production of oxalates in vitro by microbes isolated from rock surfaces with prehistoric paints in the Lower Pecos Region}}
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@incollection{b30,
	
	
		,
	title={{Diversity of lichens along altitudinal and land use gradients in the Trans Himalayan cold desert of Ladakh}}
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			KJatinder
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			RHimanshu
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			ATayade
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			RBSrivastava
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	title={{The characteristics of rare earth elements in bulk precipitation, through fall, foliage and lichens in the Lesní potok catchment and its vicinity}}
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	title={{Lichen bioindication of biodiversity, air quality and climate: baseline results from monitoring in Washington}}
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		,
	title={{Corticolous lichens as environmental indicators in urban areas in southern Brazil}}
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	title={{Diversity of epiphytic lichens and their role in sequestration of atmospheric metals}}
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	title={{Lichen and bryophyte distribution on oak in London in relation to air pollution and bark acidity}}
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	title={{The use of lichen functional group asindicators of air quality in a mediterranean urban environment}}
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	title={{Epiphytic lichens as sentinels for heavy metal pollution at forest ecosystems (central Italy)}}
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	title={{Leaves of Pittosporum tobira as indicators of airborne trace element and PM10 distribution in central Italy}}
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	title={{The use of epiphytic Antarctic lichens (Usnea aurantiacoatra and U. antarctica) to determine deposition patterns of heavy metals in the Shetland Islands}}
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@incollection{b50,
	
	
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	title={{Periodic monitoring with lichen Phaeophyscia hispidula (ach.) Moberg in Dehradun city}}
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	title={{Diffuse emission of organic trace gases from the flank and the crater of a quiescent active volcano}}
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	title={{Lichens to Biomonitor the Environment}}
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