1
Corporate Authors:
Group Author: ; ;
Published: Pergamon Press
Publication Dates: [1970, 1969]
;
Group Author: ; ;
Published: Pergamon Press
Publication Dates: [1970, 1969]
2
Corporate Authors:
Group Author:
Published: Pergamon Press,
Publication Dates: [1973]
; ;
Group Author:
Published: Pergamon Press,
Publication Dates: [1973]