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62
63
64
Electronic
Article
Presumably Free Access
Volltext (Resolving-System)
Volltext (doi)
65
Electronic
Article
Volltext (lizenzpflichtig)
66
67
Cambridge University Press 1982
Print
Book
68
69
Electronic
Article
Presumably Free Access
Volltext (Verlag)
Volltext (lizenzpflichtig)
70
Electronic
Article
Presumably Free Access
Volltext (Verlag)
Volltext (lizenzpflichtig)
71
72