Directory of United States Government Periodicals and Subscription Publications: February 1963
Publication month:
11
Publication frequency:
[Irregular. Issued in loose-leaf form. Some issues are also applicable to chap. 1 and 2 (P 1.12/3:(nos.) and chap. 3 and 7 (P 1.2/4:(nos.).) These are sold on subscription as indicated in the entries immediately following.]