The publication of this Handbook was supported by the Russian Federation

Ismonov, Abduvakhob Zhuraevich – Candidate of  Biological Sciences, Institute of  Soil 
Science  and  Agrochemistry  (Tashkent,  Uzbekistan),  specialist  in  the  field  of   soil  genesis,  soil 
classification, chemical and physical properties of  soils. E-mail: [e-mail].
Kan, Vyacheslav Maksimovich – Doctor of  Agricultural Sciences, U.U. Uspanov Kazakh Research 
Institute of  Soil Science and Agrochemistry (Almaty, Kazakhstan), specialist in the field of  soil 
science and amelioration. E-mail: [e-mail]