Travaux.

1961/1962 Jun-Dec; 1963-1965; no.372-377 1966 Jan-Jun; no.378-382 1966 Jul-Dec; no.383-388 1967 Jan-Jun; no.389-393 1967 Jul-Dec; no.394-399 1968 Jan-Jun; no.400-405 1968 Jul-Dec; no.406-410 1969 Jan-May; no.412-417 1969 Jul-Dec; no.418-423 1970 Jan-Jun; no.424-429 1970 Jul-Dec; no.430-434 1971 Jan-May; no.435-441 1971 Jun-Dec; no.442-446 1972 Jan-May; no.447-453 1972 Jun-Dec; no.454-458 1973 Jan-May; no.459-465 1973 Jun-Dec; no.466-470 1974 Jan-May; no.471-477 1974 Jun-Dec; no.478-484 1975 Jan-Jul; no.485-490 1975 Aug-Dec; no.491-497 1976 Jan-Jul; no.498-502 1976 Aug-Dec; no.503-510 1977 Jan-Aug; no.511-513 1977 Sep-Nov; v.568-572 JY-D(1982); v.573-578 JA-JE(1983); v.579-583 JY-D(1983); v.584-589 JA-JE(1984); v.590-594 JY-D(1984); v.595-600 JA-JE(1985); v.601-605 JY-D(1985); v.628-633 JA-JE(1988); v.634-638 JY-D(1988); v.639-644 JA-JE(1989); v.661-666 JA-JE(1991); v.667-671 JY-D(1991); v.34(1950); v.36(1952)