Online Books by
Helen Tomlinson
Books from the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Tomlinson, Helen: Impact of a negatively weighted variable on the validity of an aptitude index (Lackland Air Force Base, Texas : Personnel Laboratory, Wright Air Development Division, Air Research and Development Command, United States Air Force : 1960., 1969), also by Leland D. Brokaw, United States. Air Force. Air Research and Development Command, United States. Wright Air Development Center, and Lackland Air Force Base (Tex.) (page images at HathiTrust)
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