Материалы сайта
Это интересно
Environmental problems
My sources Sites in Internet, which I have visited to write this report: . www.5ballov.ru . www.nuc.umr.edu . www.students.ru . www.botany.uwc.ac.za . www.ecology.com . www.eco-pros.com . www.greenpeace.com . www.rain-tree.com . www.science.gmu.edu Books: 1. Sosunova I.A. All-Russian conference Ministry of the Nature of RF 1994. 2. Aisenshtat R.D. Ecological situation in Russian Federation. Moscow, 1993 3. Roubin L.N.Especially protected territories. Moscow,1995 4. Karin P.R. Ecological boomerang / Science and life. 1996 5. Politkovskaya А. Till catastrophe?/New times,1994