WMP Report Series – 37
Register on National Weather Modification Projects 1999
This present Register is the twenty second such publication issued. It is based on information obtained from Member countries on experiments and operations sponsored by government agencies or private concerns that took place during 1999. A feature of this report is a preliminary analysis of the trends (number of countries, methods, types of activity, etc.) reported by WMO Members since the beginning of these registers in 1975. The analysis can be found in Section IX.
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Programme on Physics and Chemistry of Clouds and Weather Modification Research;WMP 37
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