003950000a22001330004500060000800000082001500008100002200023245007100045250000600116260004400122260000900166300000800175650007800183  a100  a551.63 PET  aPetterson, Sveore  aWeather analysis and forecasting . V.2 Weather and weather systems  a2  aNewyork, Mc Graw- Hill Book Company Inc  c1956  a266  aTemperature-Humidity relationships/ Clouds-precipitation/ Weather systems