2020. Behavioral Effect of The Specific Sex Pheromone PH-227-1RR Towards Butterflies Codling Moth Cydia pomonella in Two Apple Orchards in Draa Ben Khedda Region of North Algeria . Bulletin of Pure & Applied Sciences- Zoology . 39, 2 (Dec. 2020), 455–462. DOI:https://doi.org/10.48165/.