El Rhzaoui, Ghita, Pradeep K. Divakar, Ana Crespo, Hikmat Tahiri, and Fatima Ezzahra El Alaoui-Faris. “Xanthoria Parietina As a Biomonitor of Airborne Heavy Metal Pollution in Forest Sites in the North East of Morocco”. Lazaroa 36 (December 14, 2015): 31–41. https://doi.org/10.5209/rev_LAZA.2015.v36.49487.