2015-04-022015-04-02https://dl.nsf.gov.lk/handle/1/18524Biological SciencesEntomologyStudies on the field release of the parasites Evania appendigaster and Tetrastichus hagenowii for the control of Periplanata americana; the american cockroach.University of Sri JayewardenepuraRG/84/B/005FR 0357