Evans, Craig A., Robert L. Webb, and Richard A. Wiebe, eds. Nag Hammadi Texts and the Bible: A Synopsis and Index. Leiden; New York; Köln: E. J. Brill, 1993. contains parallels/cross-references that should be able to be accessed in two forms:
1. As a third section in the Cross-references guide section and
2. As a new harmony
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