003690000a22001330004500060000800000082001500008100002300023245007000046250000600116260003400122260000900156300000800165650006200173  a100  a551.63 WEA  aPetterssen, Sverre  aWeather analysis and forecasting: v 2 weather and weather systems  a2  aNewyork, Mc Graw-Hill Book Co  c1956  a263  aWeather forecasting/clouds/fog/climatology/precipitations