Yakobson, Anatoly The art of the Khachkars - Armenian Stone Crosses / A. Yakobson; AS of ArmSSR, Institute of arts. - Yerevan : S. n., 1978. - 12 p. ; 20 cm. - 728.5(47.925)( NLA) . Subjects--Topical Terms: Art, ArmenianCrosses --Armenia Universal Decimal Class. No.: 728.5(47.925)( NLA)