TY  - BOOK
AU  - Wolstenholme,G.E.W.
AU  - O'Connor,Cecilia M.
ED  - Ciba Foundation.
TI  - Virus virulence and pathogenicity : : in honour of Prof. J. Mulder/ 
PY  - 1960///]
CY  - Boston : 
PB  - Little, Brown, 
KW  - Mulder, Jacob.
KW  - Virus Diseases
KW  - Etiology
ER  -