[Effects of DDT on the malaria incidence in Costa Rica].
D003364:Costa Rica; D003634:DDT; D006801:Humans; D015994:Incidence; D008288:Malaria / Q000517:prevention & control*
D003634:DDT
DDT; MALARIA/prevention and control
La influencia del DDT en la incidencia del paludismo en Costa Rica.