@book{6154,
	author = {Iversen Peter B. and World Health Organization. Action Programme on essential Drugs.},
	title = {Collaboration between NGOs, ministries of health and WHO in drug distribution and supply.},
	publisher = {World Health Organization,},
	year = {1998.},
	series = {(DAP research series ; no.27).},
	address = {Geneva : }
}