@book{3786,
	author = {Van Hemert, P. A. (ed.) and Van Ramshorst, J. D. (ed.)},
	title = {International symosium on pertussis (symposia series in immunobiological standardization) (vol-13)},
	publisher = {S. Karger},
	year = {1970},
	series = {13},
	address = {Basel}
}