Parasitism and developmental parameters of the parasitoid Diadegma majale (Gravenhorst) in control of Plutella xylostella (L.) on selected cultivars of canola - Seyed Ali Asghar Fathi; Maryam Bozorg-Amirkalaee; Rana M. Sarfraz; Hoshang Rafiee-Dastjerdi (BioControl, 2012)