IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-11-1-39591 Original Research Paper A STUDY TO ASSESS THE EFFECTIVENESS OF PLANNED TEACHING PROGRAMME ON KNOWLEDGE REGARDING SUBSTANCE ABUSE AMONG ADOLESCENTS IN SELECTED HIGHER SECONDARY SCHOOL, AGARTALA. DEB Dr. January 2022 11 1 01 02