Journal des observateurs.

v.1 (1915-1917); c.1 v.1 1915-17; v.1-2 1915-19; v.2 (1917-1919); v.1-3 1915-1920; c.1 v.2-3 1917-20; v.3 (1919-1920); v.4 (1921); v.1-5 1915-1922; t.3-5 (1919-22); c.1 v.4-5 1921-22; v.5 (1922); v.4-6 1921-1923; c.1 v.6-7 1923-24; v.6-8 1923-25; v.7-9 1924-1926; c.1 v.8-9 1925-26; v.9 1926; c.1 v.10 1927; v.8 no.3,12 1925, v.11 no.5 1928; v.10-11 1927-28; v.10-12 1927-1929; v.12-13 1929-30; v.13-15 1930-1932; v.14-15 1931-32; v.16 1933; v.17 1934; v.18 1935; v.19 1936; v.18-20 1935-37; v.20 1937; v.21 1938; v.22 1939; v.23 1940; v.24 1941; v.25 1942; v.26 1943; v.27 1944; v.28 1945; v.29-30 1946-1947; v.31 1948; v.32 1949; c.1 v.32-33 1949-50; v.31-34 1948-51; v.33-34 1950-1951; v.35-36 1954-55; v.37-38 1954-55; v.38 1955; v.39 1956; v.39-40 1956-57; v.40 1957; v.41 1958; v.42 1959; v.42-43 1959-60; v.43 1960; v.44 1961; v.45 1962; v.46 1963; v.47 1964; v.48 1965; v.49; v.49 1966; v.50; v.50 1967; c.1 v.50 1967; v.51; v.51 1968