Karthikeyan, K., Jacob, S. and Purushothaman, S.M. 2007. Field Evaluation of Egg Parasitoids, <I>Trichogramma japonicum</I> Ashmead and <I>Trichogramma chilonis</I> Ishii, against Rice Yellow Stem Borer and Leaf Folder. Journal of Biological Control. 21, 2 (Dec. 2007), 261–265. DOI:https://doi.org/10.18311/jbc/2007/3858.