@book{18333,
	author = {El-Nageh, Mohamed M. and Heuck, Claus C. and World Health Organization. Regional Office for the Eastern Mediterranean},
	title = {Basics of quality assurance for intermediate and peripheral laboratories},
	publisher = {World Health Organization Regional Office for the Eastern Mediterranean,},
	year = {1992.},
	series = {WHO Regional Publications. Eastern Mediterranean Series ;},
	address = {Alexandria : },
	url = {https://iris.who.int/handle/10665/120053}
}