![](http://www.alamy.com/thumbs/6/DF1C1BE1-6519-42D2-8125-55D1BA68B6E1/2A3R835.jpg)
Students at Washington High School at class, training for specific contributions to the war effort, Los Angeles, Calif. Ralph Angar, instructor, explains propeller characteristics to student[s] in the aeronautics class
Size: 4984px × 4012px
Photo credit: © Alpha Stock / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: