Mosquito Larvicidal and Pupicidal Activity of Tephrosia purpurea Linn. (Family: Fabaceae) and Bacillus sphaericus against, Dengue Vector, Aedes aegypti, Venkadachalam, Ramesh, Subramaniyan Vijayakumar, Palani Manogar, Subramaniyan Mahadevan, Srinivasan Prabhu, and Raji Murugan , Pharmacognosy Journal, September 2017, Volume 9, Issue 6, p.737-742, (2017)