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Desensitization is successful in about 80 percent of hay-fever sufferers and up to
90 percent of asthmatics; treatment is more effective in persons with a few, well-
defined allergies than in those allergic to many substances. The success of ...
The GNP originates primarily from industry (including petroleum production),
followed by agriculture, public administration and defense, and trade and finance
. Agriculture accounts for about 20 percent of the gross domestic product (GDP)
Natural erbium is a mixture of six stable isotopes: erbium- 162 (0.136 percent),
erbium- 164 (1.56 percent), erbium- 166 (33.41 percent), erbium- 167 (22.94
percent), erbium- 168 (27.07 percent), and erbium- 170 (14.88 percent). Erbium ...
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LibraryThing ReviewUser Review - keylawk - LibraryThing
This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review
The New Encyclopaedia Britannica (Encyclopaedia)User Review - Not Available - Book Verdict
For virtually all its 238 years,Britannica has ruled the shelves as a peerless general encyclopedia. Reviewers have consistently given it high marks for most of the 12 criteria identified inKister's ... Read full review