1. Cloud Types for Observers;British Meteorological Office,1982
2. The Use of Clouds in Forecasting. Compendium of Meteorology;Brooks,1951
3. The Clouds;Clause,1961
4. A Discussion of Generating Cell Observations with Respect to the Existence of Freezing or Sublimation Nuclei. Artificial Stimulation of Rain;Cunningham,1957
5. The Book of Clouds;Day,2003