sharashy, omar. 2022. “Application of Shannon and Simpson Diversity Index to Study Plant Biodiversity on Coastal Rocky Ridges Habitats With Reference to Census Data in the Ras El-Hekma and Omayed Area on the Western Coastal Region of Egypt”. Journal of Pure & Applied Sciences 21 (1):41-45. https://doi.org/10.51984/jopas.v21i1.1578.