Factors affecting legibility of digits /
Harold B. Schapiro.

APA Citation

Schapiro, H. B.., United States. Air Force. Air Research and Development Command., Wright Air Development Center. (1952). Factors affecting legibility of digits. Wright-Patterson Air Force Base, Ohio: Wright Air Development Center, Air Research and Development Command, United States Air Force.

MLA Citation

Schapiro, Harold B., United States. Air Force. Air Research and Development Command, and Wright Air Development Center. Factors Affecting Legibility of Digits. Wright-Patterson Air Force Base, Ohio: Wright Air Development Center, Air Research and Development Command, United States Air Force, 1952.