TY - BOOK AU - Hennessen,W. AU - Huygelen,C. ED - International Association of Biological Standardization. TI - Immunization, benefit versus risk factors: proceedings of the 36th symposium SN - 3805528167 (pbk.) AV - RA638 .I52 1979 U1 - 614.4/7 PY - 1979/// CY - Basel, New York PB - S. Karger KW - Vaccination KW - Congresses KW - Complications KW - Cost effectiveness N1 - Includes bibliographical references and indexes ER -