![](https://pics.cdn.librarything.com//picsizes/55/91/55918b8faa5abc66376376e6a514377424c4145_v5.jpg)
Richard A.F. Grieve [credit: Canadian National Committee of IUGS and IGCP]
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Imagen subida por xaagmabag el Oct 21, 2014.
Derechos de autor: Canadian National Committee of IUGS and IGCP
Imagen subida por xaagmabag el Oct 21, 2014.
Derechos de autor: Canadian National Committee of IUGS and IGCP