Cerro Tololo Interamerican Observatory / Learmonth Solar Observatory / Udaipur Solar Observatory / High Al+tude Observatory / Frank Hill National Solar Observatory / Solar Observatory / Big Bear Solar Observatory / /
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travel-time differences using velocity images / Travel-time differences / Travel times / travel time difference / /
Deep Meridional Flow Measurements from GONG: Temporal and Depth Variations 1 Shukur Kholikov ● John Leibacher ● Frank Hill National Solar Observatory, Tucson, Arizona, USA