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USNO Catalog 00001 Authors of the Catalogue. 00002 AAVSO Variable Star Charts, AAVSO, Cambridge, Massachusetts. 00003 S.Gaposchkin, HA 115, N5, 1946. 00004 P.Th.Oosterhoff, MS, 1956. 00005 C.Payne-Gaposchkin, HA 115, N14, 1950. 00006 D.J.K.O'Connell,Riv Repr N6, 1954. 00007 S.Gaposchkin, HA 113, N2, 1953. 00008 J.Voute, Lemb Ann 2, D63, 1932. 00009 D.O'Connell, Riv Publ 2, N5, 69, 1949. 00010 F.W.Wright, HA 89, N10, 1937. 00011 J.Voute, Lemb Ann 8, 42, 1940. 00012 J.Voute, Lemb Ann 2, D53, 1932. 00013 E.Hertzsprung, Leid Ann 20, N3, 119, 1950. 00014 H.Shapley, H.H.Swope, HA 90, N5, 1934. 00015 H.S.Leavitt, HC N120, 1906. 00016 C.Hoffmeister, KVBB N27, 1943. 00017 C.H.Payne, HB N861, 1928. 00018 S.Gaposchkin, HA 115, N15, 1950. 00019 D.O'Connell, Riv Publ 1, N2, 19, 1936. 00020 A.D.Walker, HC N170, 1912. 00021 A.J.Cannon, M.W.Mayall, HA 112, 1949. 00022 H.Shapley, H.H.Swope, HB N885, 1931. 00023 S.Gaposchkin, HA 115, N4, 1945. 00024 F.W.Wright, HB N891, 1933. 00025 L.V.Robinson, HA 90, N2, 1933. 00026 S.Kanda, JASAC N102, 1951. 00027 B.H.Dawson, AJ 30, 84, 1917. 00028 E.Hertzsprung, BAN 6, 9, 1930. 00029 H.E.Wood, UOC N48, 51, 1920. 00030 D.Hoffleit, HB N874, 1930. 00031 C.H.Payne, HB N860, 1928. 00032 E.Hertzsprung, BAN 2, 212, 1925. 00033 H.van den Bergh van Eisynga, BAN 9, 199, 1941. 00034 E.Hertzsprung, BAN 2, 114, 1924. 00035 E.Hertzsprung, BAN 2, 165, 1924. 00036 E.Hertzsprung, BAN 3, 107, 1926. 00037 C.de Jager, BAN 10, 248, 1947. 00038 M.Schwarzschild, BAN 7, 337, 1936. 00039 P.Th.Oosterhoff, BAN 5, 156, 1930. 00040 P.Th.Oosterhoff, BAN 4, 183, 1928. 00041 P.Th.Oosterhoff, BAN 8, 48, 1936. 00042 L.Gaykema, Leid Ann 20, N3, 162, 1950. 00043 H.van Gent, BAN 10, 387, 1948. 00044 E.Hertzsprung, BAN 6, 1, 1930. 00045 P.P.Bruna, BAN 6, 45, 1930. 00046 C.J.van Houten, Leid Ann 20, N10, 275, 1952. 00047 H.H.Swope, HB N883, 1931. 00048 W.Chr.Martin, BAN 6, 225-232, 1932. 00049 P.Th.Oosterhoff, C.J.Van Houten, BAN 11, 63, 1949. 00050 J.Uitterdijk, BAN 6, 245, 1932. 00051 W.Martin, BAN 6, 209, 1932. 00052 W.Martin, BAN 6, 209, 1932; Correction: BAN 6, 232, 1932. 00053 J.Mergentaler, Lwow Contr N5, 1936. 00054 J.Uitterdijk, BAN 6, 295, 1932. 00055 P.Th.Oosterhoff, BAN 7, 74, 1933. 00056 J.Uitterdijk, BAN 7, 176, 1934. 00057 E.Rybka, Lwow Contr N4, 1935. 00058 E.Rybka, Lwow Contr N2, 1934. 00059 A.Opolski, Lwow Contr N6, 1937. 00060 W.E.Kruytbosch, BAN 8, 1, 1936. 00061 A.van Hoof, BAN 8, 72, 1936. 00062 P.P.Bruna, BAN 7, 339, 1936. 00063 R.S.Dugan, F.W.Wright, Princ Contr N19, 1939. 00064 W.O'Leary, D.O'Connell, AN 259, 399, 1936. 00065 A.Opolski, Lwow Contr N4, 1935. 00066 M.D.Ashbrook, HA 109, N8, 1942. 00067 W.O'Leary, D.O'Connell, AN 257, 391, 1935. 00068 J.Sahade, APJ 116, 27, 1952. 00069 R.Prager, BAN 8, 50, 1936. 00070 J.Uitterdijk, BAN 8, 62, 1936. 00071 J.de Kort, BAN 8, 115, 1937. 00072 J.Mergentaler, Lwow Contr N6, 1937. 00073 M.W.Mc Leod, H.H.Swope, HB N915, 1941. 00074 J.Mergentaler, Lwow Contr N10, 1939. 00075 J.Mergentaler, Erg AN 10, C4, 1940. 00076 L.E.Erro, HB N913, 1940. 00077 E.Hertzsprung, BAN 9, 63, 1940. 00078 M.Huruhata, HB N913, 1940. 00079 A.Brun, M.Petit, BAF 12, N1, 1952. 00080 C.Hoffmeister, VSS 3, N1, 1956. 00081 D.O'Connell, Ric Astr 3, N2, 1954. 00082 C.Hoffmeister, AN 278, 24-40, 1949. 00083 H.van Gent, BAN 10, 382, 1948. 00084 H.van Gent, BAN 10, 377, 1948. 00085 C.Hoffmeister, Erg AN 12, N1, 1949. 00086 H.Shapley, L.B.Allen, N.Greenstein, AJ 59, 270-271, 1954. 00087 D.Hoffleit, HB N902, 1936. 00088 M.Petit, DOB 6, N12, f.3, 1953. 00089 H.Shapley, Harv Repr N344, 1951. 00090 D.J.K.O'Connell, Riv Publ 2, N6, 100, 1951. 00091 S.Ninger-Kosybowa, Wrocl Comm N1, 1949. 00092 D.J.K.O'Connell, Ric Astr 3, N10, 1955. 00093 S.Ninger-Kosybowa, Wrocl Contr N9, 1955. 00094 A.R.Hogg, K.Gottlieb, G.V.Simonov, B.Hall, MN 111, 339, 1951. 00095 W.Hassenstein, Potsd Publ 25, N79, 1922. 00096 M.A.Svechnikov, Perem. 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Zvezdy 4, 363, 1935. 00139 A.Brun, BAF 4, 161, 1935. 00140 W.Zonn, BZ 18, 70, 1936. 00141 O.Morgenroth, AN 256, 281-284, 1935. 00142 A.Brun, BAF 6, 1, 1937. 00143 E.A.Baker, MN 97, 541, 1937. 00144 M.Zverev, Perem. Zvezdy 5, 190, 1938. 00145 S.Beljawsky, Perem. Zvezdy 4, 345, 1934. 00146 A.Brun, BAF 7, 7, 1947. 00147 H.Schneller, KE 1943. 00148 O.Morgenroth, AN 258, 265, 1936. 00149 J.Ashbrook, AJ 58, 171, 1953. 00150 N.Florja, Perem. Zvezdy 5, 258, 1940. 00151 A.N.Vyssotsky, BZ 22, 12, 1940. 00152 C.Hoffmeister, KVBB N24, 1941. 00153 M.Zverev, Astron. Tsirk. N22, 1943. 00154 B.V.Kukarkin, Perem. Zvezdy 8, N6, 478, 1952. 00155 B.W.Kukarkin, Perem. Zvezdy 5, 333, 1940. 00156 N.E.Kurochkin Perem. Zvezdy 6, N6, 303, 1949. 00157 T.S.Chernova, Supplement I to GCVS (First Edition). 1949. 00158 O.Morgenroth, AN 250, 75-80, 1933. 00159 E.K.Gits, Perem. 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Zvezdy 7, N1, 7, 1949. 00183 W.Zessewitsch, Tadj. Tsirk. N2, 1934. 00184 G.A.Lange, Tadj. Tr. 1, Issue 2, 5, 1938. 00185 J.Pagaczewski, Wars Circ N24, 1949. 00186 J.Pagaczewski, Poznan Publ 2, N4, 43, 1936. 00187 O.Morgenroth, AN 248, 325, 1933. 00188 A.V.Solov'ev, Tadj. Tr. 1, Issue 3, 1941. 00189 A.Jensch, AN 255, 417, 1935. 00190 C.Hoffmeister, AN 247, 281, 1933. 00191 V.P.Zessewitsch, Astron. Tsirk. N18, 1943. 00192 V.P.Zessewitsch, Odessa Izv. 4, Issue 1, 1954. 00193 H.Shapley, E.M.Hughes, HA 90, N4, 1934. 00194 E.Hertzsprung, BAN 8, 119, 1937. 00195 R.Prager, HB N916, 1942. 00196 C.Hoffmeister, AN 253, 195-204, 1934. 00197 D.Ya.Martynov, Izv. Astron. Ehngel'gard Obs. N26, 1951. 00198 G.G.Cillie, B.J.Bok, HB N920, 1951. 00199 A.V.Solov'ev, Tadj. Tsirk. N52, 1943. 00200 W.J.Luyten, ApJ 109, 532-537, 1949. 00201 W.Schone, MVS N139, 1951. 00202 A.V.Solov'ev, Astron. Tsirk. 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