TY - JOUR A1 - Mathews, J. D. T1 - A short history of geophysical radar at Arecibo Observatory JO - Hist. Geo Space. Sci. J1 - HGSS VL - 4 IS - 1 SP - 19 EP - 33 Y1 - 2013/03/13 PB - Copernicus Publications SN - 2190-5029 UR - https://hgss.copernicus.org/articles/4/19/2013/ L1 - https://hgss.copernicus.org/articles/4/19/2013/hgss-4-19-2013.pdf DO - 10.5194/hgss-4-19-2013 ER -