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Browsing results matching Helicopters in search and rescue operations -- Oregon -- History -- 20th century.

	Subject	Items
1.	Helicopters -- Recognition.	5
2.	Heliculture	0
3.	See Snail farming	2
4.	Heliochromy	0
5.	See Color photography	15
6.	Héliogabale, Emperor of Rome, 204-222	0
7.	See Elagabalus, Emperor of Rome, 204-222	1
8.	Heliogabalus, Emperor of Rome, 204-222	0
9.	See Elagabalus, Emperor of Rome, 204-222	1
10.	Heliography (Photography)	0
11.	See Sunprinting (Photography)	1
12.	Heliomagnetism	0
13.	See Solar magnetic fields	1
14.	Helion, Jean, 1904-1987.	1
15.	Helios (Greek deity)	0
16.	See Also Apollo (Deity)	2
17.	Helios (Greek deity) -- Juvenile fiction.	1