(no description available)
Cone search capability for table VII/181/table2 (Catalog for PG Quasars)
Cone search capability for table VII/181/table3 (Catalog for Seyfert 1 and 1.5 galaxies)
Cone search capability for table VII/181/table4 (Catalog for Seyfert 2 galaxies)
Cone search capability for table VII/181/table5 (Catalog for BL Lacertae objects)
Cone search capability for table VII/181/table6 (Other names of PG Quasars)
Cone search capability for table VII/181/table7 (Other names of Seyfert 1 and 1.5 galaxies)
Cone search capability for table VII/181/table8 (Other names of Seyfert 2 galaxies)
Cone search capability for table VII/181/table9 (Other names of BL Lac objects)