Proceedings of the IRE volume 37 number 10, October 1949.
IRE 1949, pp 1106 - 1232 inclusive, plus sep. numbered adverts at front & rear. Whole issue in original wraps, as issued.
IRE 1949, pp 1106 - 1232 inclusive, plus sep. numbered adverts at front & rear. Whole issue in original wraps, as issued.