Razin Gennadii Sergeevich, born 2 April 1930, deceased 13 February 2015. Graduated from the Siberian Forest Engineering Institute (at the present time – M. F. Reshetnev Siberian State Aerospace University), Faculty of Forest Engineering, with a specialty Engineer of Forest Exploitation (1955) in the city of Krasnoyarsk, Krasnoyarsk Krai, Russia, PhD studies on Forest Planning and Forest Inventory at Povolzsky Forest Engineering Institute (at the present time – Volga State University of Technology), Faculty of Forestry (at the present time – Faculty of Forestry and Ecology) in the city of Yoshkar-Ola, Mari El Republic (1967). Worked as an engineer-researcher for VNIILM Perm Forest Experimental Station (1973-1983), Laboratory of Forest Ecology, Natural Science Institute of Perm State University (1984-1992). Since 1992 Adviser for the last place of work. Specialist in forest inventory and modeling of tree stand growth, forest crops, silviculture and forest science. Author and co-author of more than 90 scientific publications. Some of them: «Dinamika somknutosti odnoyarusnykh drevostoev» (Closure dynamics of single-storied tree stands) In «Lesovedenie» (Rus. J. For. Sci.), 1979 (in Russian); «Modeli rosta drevostoev elovykh kultur raznoi gustoty» (Growth models of planted spruce tree stands of different density) In «Lesovedenie» (Rus. J. For. Sci.), 1988 (in Russian with English abstract); «O khode rosta drevostoev. Dogmatizm v lesnoi taksatscii» (On tree stand growth. Dogmatism in forest inventory) In «Lesnaya Taksatsciya i Lesoustroistvo» (For. Inventory & For. Plann.), 2010 (in Russian with English abstract); «O zakonakh i zakonomernostyakh rosta i razvitiya, zhizni i otmiraniya drevostoev» (On laws and regularities of growth and development, life and dying of tree stands) In «Lesnoe Khozyaistvo» (Rus. J. Forestry), 2010 (in Russian); «Lesnye Kultury Teploukhovykh v Imenii Stroganovykh na Urale: Istoriya, Zakony Razvitiya, Selekciya Eli» (Teploukhov Forest Plantations in Stroganoff estate in the Urals: History, Laws of Development, Selection of Spruce), Perm, 2011 (in Russian with English summary); «O metodicheskih podkhodakh postroeniya eskizov tablits khoda rosta» (Methodical approaches to composition of draft tables of stand growth course) In «Lesnaya Taksatsciya i Lesoustroistvo» (For. Inventory & For. Plann.), 2011 (in Russian with English abstract); «Teoriya estestvennoj vozrastnoj dinamiki odnoyarusnykh drevostoev» (Theory of natural age dynamics of single-storied tree stands) In «Lesnoe Khozyaistvo» (Rus. J. Forestry), 2012 (in Russian); «Razvitie drevostoya i ego konstanty» (Development of the forest stand and its constant) In «Vestnik Permskogo Universiteta. Seriya Biologicheskaya» (Bull. Perm Univ. Ser. Biol.), 2012, Vypusk 2 (Iss. 2) (in Russian with English summary).