Company Tasa Graphic Arts, Inc. created these great apps:
geotimescale, pangaea, Arches National Park Geology Tour, Arches National Park Geology Tour HD, geotimescale enhanced, geotimescale enhanced HD, Folds and Faults HD, Folds and Faults, Puzzling Plates, Focus on Earthquakes, Earthquake Finder, Grand Canyon Geology Tour, Mineral Database, Mineral Database, Earth’s Rocks and the Rock Cycle, Earth’s Rocks and the Rock Cycle, How to Identify Minerals, How to Identify Minerals, geotimescale 2, Plate Tectonics Visual Glossary and Atlas, Plate Tectonics Visual Glossary and Atlas, Puzzling Plates, Mohs Mineral Madness, Discovering Continental Drift, Probing Earth's Interior, and others..
