New method begun by U S Forest Service applies only to remote wilderness areas inaccessible by road or trail; combination of two types of air attack; one is helicopter; other, smokejumper or parachutist fireman.
New technique for fighting forest fires
Am Helicopter
American Helicopter ; 14 , n 4 ; p 15-16 + 22-23
1949
2 pages
Aufsatz (Zeitschrift)
Englisch
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