Bulletin.

no.1-3 1869-1870; no.6-7 1872; no.8-10 1873-1874; no.11-13 1876; no.14-18 1877-1878; no.19-23 1878-1880; no.24-27 1880-1882; no.28-31 1883-1884; no.32-33 1885-1886; no.34-36 1887-1890; no.37-41 1891-1895; no.42-45 1896-1899; no.46-49 1900-1903; no.50-51 1904-1905; no.52-53 1906-1907; no.54-58 1908-1912; 1908/1913; no.59-63 1913-1923; no.64-67 1924-1926; no.68-75 1927-1930; ser.2 no.1-8 1931-1933; ser.2 no.9-16 1933-1934; ser.2 no.17-24 1934-1936; ser.2 no.35 1938; ser.2 no.25-37 1936-1939