| CHEMICAL 
ABUNDANCE   HISTORICAL AND SCIENTIFIC BACKGROUND 
 OUR RESEARCH     PUBLISHED PAPERS   1.     
      PETROV G. T.,  C. r. A. S. Armenia SSR, v. 69, 52-56, 1979 ( in
Russian)                                                        
      “Contents of the ions and chemical abundances in the
nuclei of type 1 Seyfert galaxies and broad lines radio galaxies” 2.     
      PETROV G. T.,  Youth Astrophysicists Conference, 2-5 Oct.,
1979, Bjurakan                                           
      “Abundances in the Radio- and Seyfert galaxies” 3.     
      PETROV G. T. , C. r. A.
S. Armenia SSR, v. 70, 46-49, 1980 (in Russian) 4.     
      PETROV G. T.,GOLEV V.
K., YANKULOVA I. M., Astr. Tsirc. No. 1133, 1-2, 1980 (in Russian)                      
       “Abundances of some ions in
diffuse nebulae. I. Galactic diffuse nebulae.” 5.     
      GOLEV V. K., YANKULOVA
I. M., PETROV G. T.,  Astr. Tsirc. No.
1133, 2-4,1980 (in Russian)                              
       “Abundances of some ions in
diffuse nebulae. II. Diffuse nebulae in nearby galaxies.” 6.     
      JANKULOVA I. M., PETROV
G. T., GOLEV V. K.,  Astroph. Invest.(Bulg.
AS), v. 3, 89-94, 1981 (in Russian)    
       “Physical conditions and
abundance of some ions in diffuse nebulae.”   
       
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