Study
Citizens' Research Foundation
Description based on no. 4, suppl
Kevin L. McKeough
Citizens' Research Foundation [1970] Study no. 17
Available at 1 libraries
John F. Bibby and Herbert E. Alexander . Kevin L. McKeough and John F. Bibby
Citizens' Research Foundation [1968] Study no. 14
William Buchanan and Agnes Bird
Citizens' Research Foundation [1966] Study no. 10
Available at 2 libraries
John R. Owens
Citizens' Research Foundation [1966] Study no. 11
Henry Wells and Robert W. Anderson
Citizens' Research Foundation [196-] Study no. 4
suppl