Schools Council working paper
Evans Bros. : Methuen
Working paper
1969
HathiTrust
icus
Larry S. Skurnik and Ian Connaughton ; statistical analysis, John Hall
Evans/Methuen Educational 1967 Schools Council working paper no. 30
所蔵館1館
H.M.S.O 1966 Schools Council working paper no. 6, pt.2
H.M.S.O 1966 Schools Council working paper no. 6, pt.1