Detta verk av signaturen Rbg, författat av Sigurd Ribbing (1816-1899), sammanbundet med Grundlinier till Logiken, har digitaliserats i augusti 2008 från Harvard University av Google Books och anpassats för Projekt Runeberg i januari 2014 av Ralph E.
This volume was scanned by Google Book Search,
from where the scanned images were copied to Project Runeberg.
We very much appreciate that they have made this possible
and want to encourage other digital library projects to
follow their example. Read more about Project Runeberg's
image sources.