Perlo 's work at the WPB involved analysis of the various economic problems of aircraft production .
Perlo remained in that capacity until leaving to become head of the aviation section of the Bureau of Programs and Statistics at the War Production Board ( WPB ) .
Perlo 's work at the WPB involved analysis of the various economic problems of aircraft production .
Perlo remained in that capacity until leaving to become head of the aviation section of the Bureau of Programs and Statistics at the War Production Board ( WPB ) .