@book{642,
	author = {Abramson, J. H. and Abramson, Z. H.},
	title = {Survey methods in community medicine :},
	publisher = {Churchill Livingstone,},
	year = {1999.},
	address = {Edinburgh ;},
	edition = {5th ed.},
	note = {Companion v. to: Making sense of data / J.H. Abramson. 2nd ed. 1994.}
}