1. Abdullah Yarouz Shafiq, Foundations of Forest Development, University of Mosul Publications, p. 180, 1980 AD.
2. Abdullah Zain Al-Abidin, Lands: Their Origin, Formation, and Natural Properties, Dar Al-Nahda Al-Arabiya, Cairo, p. 56, 1955.
3. Agriculture Law No. M/64 dated 10/8/1442 AH.
4. Ahmed Abdel Karim Salama, Environmental Protection Law, Dar Al-Nahda in Cairo, p. 127, 2002 AD.
5. Ahmed Benmasoud, Preserving the Environment, Rabat, Morocco, p. 80. 2001.