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Keywords: Betty19720813.png en This image of Typhoon Betty is from August 13 1972 2012-06-29 1973 NOAA Technical Memorandum NESS 45 on the Dvorak Tropical Cyclone Strength Estimation Technique Vernon F Dvorak PD-USGov Check categories 2012 September 23 en wikipedia 1972_Pacific_typhoon_season 2 1972 Pacific typhoon season Original upload log wikitable - - 2012-06-29 19 35 58 278 × 282 66563 bytes Thegreatdr <nowiki></nowiki> |