cam a22 4500 215854330 CHVBK 20200907033712.0 940824s1941 xxu|||||||||| 10 |eng d (RERO)1899214 RERO geuhim s1me rero Virus and rickettial diseases with especial consideration of their public health significance : a symposium held at the Harvard School of Public Health, June 12-june 17, 1939 Cambridge Mass. Harvard Univ. Press 1941 XI, 907 p. ill. 24 cm txt rdacontent n rdamedia nc rdacarrier maladie à virus (RERO)A010007030 rerovoc Santé publique (RERO)A021002702 rero Actes de congrès (RERO)A021105530 rero Harvard University (Cambridge, Mass.) Harvard School of Public Health Symposium (1939 Cambridge Mass.) (RERO)A012605720 BK020800 XK020000 XK020000 RERO RE61029 RE61029 RE610290002 WC VIR RERO 710 2- Harvard University (Cambridge, Mass.) Harvard School of Public Health Symposium (1939 Cambridge Mass) (RERO)A012605720 SWISSBIB 215854330