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Browsing results matching Helicopters -- History.

	Subject	Items
1.	Helicopters -- Models -- Radio control	2
2.	Helicopters -- Noise.	2
3.	Helicopters -- Piloting -- Examinations, questions, etc.	1
4.	Helicopters -- Piloting -- Handbooks, manuals, etc.	1
5.	Helicopters -- Ratings and rankings -- Juvenile literature.	1
6.	Helicopters -- Recognition.	5
7.	Heliculture	0
8.	See Snail farming	2
9.	Heliochromy	0
10.	See Color photography	14
11.	Héliogabale, Emperor of Rome, 204-222	0
12.	See Elagabalus, Emperor of Rome, 204-222	1
13.	Heliogabalus, Emperor of Rome, 204-222	0
14.	See Elagabalus, Emperor of Rome, 204-222	1