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Gigiena I Sanitariia|September 1, 1990
[Health aspects of sodium salts of sulfurous and sulfuric acids as environmental pollutants]Iu N Denisov, P G TkachevGigiena I Sanitariia|April 1, 1994
[Hygienic evaluation of zeolite tufa dust]V P Kosarev, P G TkachevGigiena I Sanitariia|August 30, 2002
[On systemic training of preventive medical specialists under the present conditions]V G Makarova, P G Tkachev, V A KiriushinGigiena I Sanitariia|August 26, 2003
[Alternative methodologies for standardization of deleterious environmental factors]P G Tkachev, A A Liapkalo, I P L'gova, et al.Gigiena I Sanitariia|July 17, 2003
[Basic stages for developoing hygiene and ecology]P G Tkachev, A A Liapkalo, I P L'gova, et al.Pageof 1