A table of Chapman's grazing incidence integral. Signed offprint

1954. Wilkes, Maurice V. A table of Chapman's grazing indicence integral Ch(x, ). Offprint from Proceedings of the Physical Society, B, 67 (1954). Original printed self-wrappers, tiny rust-stains from staples. Signed by Wilkes on the verso of the first leaf. [1], 304-308pp. 261 x 181 mm. Provenance: Maurice Wilkes. First edition, offprint issue. The table was calculated on a digital computer using a program based on the use of Simpson's rule. Wilkes 1999, no. 38. Origins of Cyberspace 1035.