July-Oct. 1955; CRPL-P131 to CRPL-F134. [July 26-0ct. 25, 1955.]cover titles, various paging, il. 4°
— continued with title, CRPL-F: pt. A, Ionospheric data; pt. B, Solargeophysical data.
Nov. and Dec. 1955: F135 and F136. [Nov. 22-Dec. 31, 1955.] cover titles, each 2 pts., various paging, il. 4°