http://digitalnatura.org/details.php?image_id=9124 Sun, 12 Apr 2026 17:23:38 GMT http://digitalnatura.org/data/thumbnails/38/HELIOAE.JPG http://digitalnatura.org/details.php?image_id=9124 http://digitalnatura.org/details.php?image_id=9124#comment10901 Tue, 08 Apr 2008 05:22:51 GMT DigitalNatura.Org - Heliògraf, heliógrafo, heliopirógrafo http://digitalnatura.org/details.php?image_id=9124#comment10901