WORLD Health Organization
Environmental management for vector control - Geneva WHO 1980 - 67 p. - WHO Technical report series 649 .
9241206497
Vector control
WHO Technical report series
614.43 / WOR
Environmental management for vector control - Geneva WHO 1980 - 67 p. - WHO Technical report series 649 .
9241206497
Vector control
WHO Technical report series
614.43 / WOR