@book{2908,
	author = {Smith, Guy Harold, and Basile, Robert M.,},
	title = {Conservation of natural resources.},
	publisher = {Wiley},
	year = {[1971]},
	address = {New York,},
	edition = {4th ed.},
	note = {Includes index},
	url = {http://www.loc.gov/catdir/toc/fy0713/71129661.html}
}