Diseases - Seasonal variations.

Seasonal patterns of stress, immune function, and disease / by: (Language materials, printed)

Cold comfort : = the social and environmental determinants of excess winter deaths in England, 1986-96 / by: (Language materials, printed)

Communicable Diseases- epidemiology.

Immunity- physiology.

Periodicity.

Diseases- Seasonal variations.

Diseases.

Immunity.

Seasons.