@book{13267,
	author = {Perkins, F. T. and International Association of Biological Standardization.},
	title = {International Symposium on Vaccination Against Communicable Diseases : },
	publisher = {distributed by S. Karger,},
	year = {c1973.},
	series = {Symposia series in immunological standardization ;},
	address = {Basel ;}
}