@book{24008,
	author = {Chattopadhyay, A.  and Hazra, A. K.  and Zoological Survey of India.},
	title = {Effect of heavy metal contaminated sewage effluents on the soil Arthropods in and around Calcutta /},
	publisher = {Zoological Survey of India,},
	year = {2000.},
	address = {Calcutta :}
}