1. Étude hydrologique préliminaire des oueds Zeroud et Merguellil : carte pédologique schématique des bassins versants. / Loyer, J. Y.; Scale of 1:200 000. Date of publication: 1975. (file: 10711RC_IR
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest)