ROGERS, WILLIAM W.
Blueprint reading at work, by William W. Rogers & Paul L. Welton. USAFI ed., 1944 revision. (War Department education manual EM912)
ROGERS, WILLIAM W. Blueprint reading at work, by William W. Rogers & Paul L. Welton. USAFI ed., 1944 revision. (War Department education manual EM912) © 17May44; AA455949. Hannah S. Welton (W); 20Dec71; R519134.
Hannah S. Welton|W