A Guide to the Use of D.D.T. in Malaria Control in Ceylon
Rajendran, Dr. s
A Guide to the Use of D.D.T. in Malaria Control in Ceylon - Ceylon:The Dept. of Medical & Sanitary Services 1947 - 1-21pgs - Malaria, D.D.T.
R-0055
A Guide to the Use of D.D.T. in Malaria Control in Ceylon - Ceylon:The Dept. of Medical & Sanitary Services 1947 - 1-21pgs - Malaria, D.D.T.
R-0055