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Stroke Correction and Improvement
09:04
Measurement of Evaporation and Evapotranspiration
07:08
Fundamentals of Swimming Techniques: Breathing Techniques in Swimming
07:18
Fundamentals of Swimming Techniques: Swimming Strokes
07:42
Development of Sports from the 20th Century in America
04:35
Measurement of Air Pressure, Wind Speed, Wind Direction, Radiation and Sunshine Durations
08:21
Physical education and Sports in the United States of America
03:46
Equipment and Maintenance of Standard Meteorological Station
08:49
Physical Education in great Britain
03:21
Seasonal Variations in Evaporation and Rainfall
06:47
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