@book{3787,
	author = {Perkins, F. T. (ed.) and Regamey, R. H. (ed.)},
	title = {International symposium on immunity to infections of the respiratory system in man and animals (developments in biological standardization) (vol.28)},
	publisher = {S. Karger},
	year = {1975},
	series = {28},
	address = {Basel}
}