Československá hygiena 1967, 12(1):66
Staněk, V. et al.: A contribution to the epidemiology of chronic bronchitis. Acta med. scand., 179, 1966, 6 : 737-746.
Published: January 1, 1967 Show citation
Československá hygiena 1967, 12(1):66
Published: January 1, 1967 Show citation