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The book-form of Encyclopaedia Britannica has been in print since it was first published in Edinburgh, Scotland, in 1768. It will stop being available when the current stock runs out, the company said. The Chicago-based company will continue to offer digital versions.
"While Wikipedia has become ubiquitous, the Britannica remains a consistently more reliable source," she said.
Unrecorded CD-R and CD-RW: 5-10 years
Recorded CD-R: 50-200 years
Recorded CD-RW: 20-100 years
Recorded DVD-R: 30-100 years
Recorded DVD-RW: up to 30 years
Recorded BD-R and BD-RE: 30-200 years