1950s - The science of crop dusting is discussed from the 1950s including the use of helicopters.

Name: 1950s Science Crop Dusting Discussed 1950s
Uploaded: 2013-06-03T00:00:00.000Z
Duration: 3 min 21 s
Channel: Rick Ray
Description: 1950s - The science of crop dusting is discussed from the 1950s including the use of helicopters. Stock Footage Video (100% Royalty-free) 4012678 | Shutterstock