THE REGIONAL ASPECTS OF RESPIRATORY ALLERGY IN SOUTH AFRICA.
D002980:Climate; D004813:Epidemiology; D005007:Ethnology; D010944:Plants; D006255:Rhinitis, Allergic, Seasonal; D012621:Seasons; D013019:South Africa
CLIMATE; EPIDEMIOLOGY; ETHNOLOGY; HAY FEVER; PLANTS; SEASONS; SOUTH AFRICA