Systems analysis of mediterranean desert ecosystems of northern Egypt, Samdene Author(s) Ayyad, Mohamed A.
Conservation and management of natural heritage in Arab countries : proceedings of the third Regional training course Author(s) Ayyad, Mohamed A. Kassas, Mohammed Ghabbūr, Samīr Ibrāhīm
The state of the rural environment in developing countries: problems, solutions and research priorities : a third Symposium for Environmental Sciences in Developing Countries, Environmental Considerations in Rural Development, summary proceedings Author(s) Ghabbūr, Samīr Ibrāhīm Ayyad, Mohamed A.
