* For Sale by Superintendent of Documents. Paper, 75c. a yr., 25c. additional for foreign mailing; single copy, 15c. • Sent to Depository Libraries. Item 766-A
Notes:
Mar.-Apr. and May-June 1956; [v. 5, no. 2 and 3]. [1956.] [2]+20+[2] p. and [2]+12+[2] p. il. 4° [The May-June issue is special issue on President's Conference on Occupational Safety.]
Availability:
* For Sale by Superintendent of Documents. Paper, 75c. a yr., 25c. additional for foreign mailing; single copy, 15c. • Sent to Depository Libraries. Item 766-A