Research bulletin.

no.611-621(1974-1976); no.632-637(1975-1977); no.661-670(1979-1981); no.671-680(1981-1982); no.681-683(1982-1983); v.700-710(1985-1986); v.721-731 (BD W/O 722;727;728;730)(1988-1991); v.732-740(1991); no.601-610; no.609-612; no.611-620; no.614-621; no.621; no.626-631(1975); no.628-631(1975); no.632-640; no.632-637; no.639-642; no.641-650; no.643-647 (incomplete); no.648-651; no.651; no.654-655; no.654-660(1978); no.654-657 (incomplete); no.656-660; no.658-666; no.661-666; no.667; no.667-673; no.668; no.670-673; no.674-677; no.674-680; no.676-681; no.681-687; no.682-688; no.688-694; no.689-690; no.689-699(1984); no.691-700; no.695-701; no.701-707; no.702-706; no.707-713; no.708-717; no.714-717; no.718-722; no.723-730; no.732; no.733; no.733-736; no.734; no.736-740; no.737-739; no.740-742; no.741-744; no.743-744(1993); no.744-745(1993); no.745; no.718(1987)