@incollection{,
	
					
					
					90CA2D8BD247425297928E3305F23B45
				,
	author={{N. LNwakwasi} and {B. UDike} and {A. N.Nwachukwu} and {H. U.Nwoke} and {J. C.Agunwamba}},
	journal={{Global Journal of Researches in Engineering}},
	journal={{GJRE}}2249-45960975-586110.34257/gjre,
	address={Cambridge, United States},
	publisher={Global Journals Organisation}201712
}

@incollection{b0,
	
	
		,
	title={{Bioremediation of a Crude Oil Polluted Soil by Application of Fertilizers}}
		,
	author={{
			MChoron
		} and {
			HSSharifi
		} and {
			HMatamedi
		}}
		
		
	
	
		,
	journal={{Iran Journal of Environ. Health Science and Engineering}}
		
			7
			4
			
			,
	year={2010}
		
	

}

@incollection{b1,
	
	
		,
	title={{Amelioration of Chemical Properties of Crude Oil Contaminated Soil using Compost from Calapoigonium Mucunoides and Poultry Manure}}
		,
	author={{
			RCEneje
		} and {
			CNwagbara
		} and {
			EGUmumarongie-Ilori
		}}
		
		
	
	
		,
	journal={{International Research Journal of Agric. Science and Soil Science}}
		
			2
			6
			
			,
	year={2012}
		
	

}

@incollection{b2,
	
	
		,
	title={{A review of soil fertilizer use in crops in Southern zone of Nigeria (in five volumes)}}
		,
	author={{
			WOEnwezor
		} and {
			ACOhiri
		} and {
			EE E JOpowaribo
		} and {
			Udo
		}}
		
		
		
	
	
		,
	journal={{Produced by the Fed. Min. of Agric. and National Research}}
		
			,
	year={1990}
		
	

}

@book{b3,
	
	
		,
	title={{Probability and Statistics for Science and Engineering Practice}}
		,
	author={{
			LLNwaogazie
		}}
		
			,
	year={2006}
			,
	publisher={Portharcourt press}
			
			,
	address={Portharcourt Nigeria}
		
		
			University of
		
	

}

@incollection{b4,
	
	
		,
	title={{The Effect of Oil Spillage on Crop Yield and Farm Icrease in Delta State Nigeria}}
		,
	author={{
			IOdjuwuederhe
		} and {
			GOmoborand
		} and {
			DAdun
		} and {
			NF
		}}
		
		
		
	
	
		,
	journal={{J. Central Eur. Agric}}
		
			7
			
			,
	year={2006}
		
	

}

@book{b5,
	
	
		,
	title={{Physico-chemical characterization of soil under the influence of gas flaring. A thesis submitted to the department of Crop and Soil Technology}}
		,
	author={{
			SCOkwuosha
		}}
		
			,
	year={2000}
			
		
		
			Federal University of technology Owerri Imo State
		
	

}

@incollection{b6,
	
	
		,
	title={{Determination of Total Petroleum Hydrocarbon (TPH) and same Ctions (Na + , Ca + and Mg 2+ ) in a Crude Oil Polluted Soil and Possible Phytoremediation by Cynodon Dactylon (Bermuda grass)}}
		,
	author={{
			FOnwuka
		} and {
			NNwachoko
		} and {
			E&anosike
		}}
		
		
	
	
		,
	journal={{Journal of Environmental and Earth Science}}
		
			2
			6
			
			,
	year={2012}
		
	

}

@incollection{b7,
	
	
		,
	title={{Field Reconnaissance and Estimation of Petroleum Hydrocarbon and Heavy Metal Contents of Soils Affected by the Ebocha-8 Oil Spillage in Niger Delta}}
		,
	author={{
			LCOsuji
		} and {
			CMOnojake
		}}
		
	
	
		,
	journal={{Nigeria Journ. Environ. Mgt}}
		
			79
			
			,
	year={2006}
		
	

}

@incollection{b8,
	
	
		,
	title={{Preliminary Investigation of Mgbede-20 Oil Polluted Site in Niger Delta}}
		,
	author={{
			LCOsuji
		} and {
			DCIniobong
		} and {
			CMOjinnaka
		}}
		
		
	
	
		,
	journal={{Nigeria. Chem. Biodiv}}
		
			3
			
			,
	year={2006}
		
	

}

@book{b9,
	
	
		,
	author={{
			SOOrajaka
		}}
		,
	title={{Nigeria in Maps: eastern states, Benin City ethiope publishing house. Pp}}
				
			,
	year={1975}
			
		
	
	,
	note={Geology in ofomata, GEK}

}

@incollection{b10,
	
	
		,
	title={{Fertility Status under Land Use Types on Soil of Similar Lithology}}
		,
	author={{
			BUUzoho
		} and {
			NNOti
		} and {
			ANgwuta
		}}
		
		
	
	
		,
	journal={{Journal of American Science}}
		
			3
			4
			
			,
	year={2007}
		
	

}