Circular.

v.1-75 1949MY-54JY; v.1-70(1949-1954); v.76-120 1954AG-60JA; no.1-101 1949-1957; v.121-175 1960F-66AP; no.102-160 1958-1964; no.140 rev.1966 1966; v.176-210 1966JY-70D; no.161-181 1964 -1967; no.136-195 1962-68; no.184-197 1968-1969; no.199-207 1969-1970; no.210 1970; no.211 1971; no.214-247 1972-1976; no.248-267 1977-1979; no.261-262 1979; no.264 1979; no.268-280 1979-1981; no.280 1981; no.295 1982; no.276-305 (Mar 1981-Oct 1983); no.282-306 1981-1983; v.211-245(1971-1977); v.246-274(1976-1981); v.272-304 (W/O 281,298,299,303)(1980-1983); v.291-315(1982-1985); no.307-330 1984-1986; no.306-337 (Nov 1983-Dec 1986); v.316-327(1985-1986); no.338-340 (Mar-Dec 1987); v.329-341(1986-1987); no.344-349 (Mar-Apr 1988); no.359-365 (Mar-Dec 1989); no.361-365 1989; no.367-368 1989; no.370 (Dec 1989); v.344-363(1988-1989); no.331-368 1986-1990; no.372 (Dec 1990); no.372-381 1990-1991; no.374-381 (1991); no.383-385 (1991-93); v.313(1984); no.1-8; no.1-94; no.10-11; no.14-41; no.43-54; no.68; no.73-92; no.93-107; no.95-135; no.99C; no.108; no.109; no.110-130; no.121; no.131; no.132; no.133; no.134; no.135A; no.135; no.136; no.137; no.138; no.139; no.140; no.141; no.142; no.143; no.144; no.145; no.146; no.147; no.148; no.149; no.150; no.151; no.152; no.153; no.154; no.155; no.156; no.157; no.158; no.159; no.160; no.161; no.162; no.163; no.164; no.165; no.166; no.167; no.168; no.169; no.170; no.171; no.172; no.174; no.176; no.177; no.179; no.180; no.181; no.182; no.183; no.184; no.185; no.186; no.187; no.188; no.189; no.190; no.191; no.192; no.193; no.195; no.196; no.196-204; no.197; no.198; no.199; no.200; no.201-210; no.206-243; no.211-220; no.221-230; no.231-237; no.238-240; no.241-243; no.244; no.245-249; no.250; no.250-275; no.251-259; no.265-270; no.271-277; no.275; no.279; no.281; no.283; no.284; no.285; no.286; no.287; no.288; no.289; no.351-356 (June-Nov 1988); no.364; no.365; no.367-368 (Nov 1989); no.367; no.368; no.369; no.370