Descript |
volumes ; 25 cm |
Frequency |
Quarterly, Apr./Jul. 2004- |
|
Semiannual, <1966>-1987 |
|
Three times a year, 1988-<2003> |
Pub Date |
Began with v. 1 in 1956. |
Note |
Imprint varies. |
|
Some nos. issued in combined form. |
|
Has occasional special issues. |
ISSN |
0033-2968 0033-2968 20 |
|