Helioseismic%20holography%20of%20Solar%20Subsurface%20Flows%20:%20progress%20
https://www.powershow.com/view1/26c08f-ZDc1Z/Helioseismic_20holography_20of_20Solar_20Subsurface_20Flows_20_20progress_20_powerpoint_ppt_presentation
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