Difference between revisions of "Useful Life (of a lamp)"
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{{languages|Useful Life (of a lamp)}} | {{languages|Useful Life (of a lamp)}} | ||
[[Category:2.3 Light Sources] | [[Category:2.3 Light Sources]] | ||
[[Category:Alphabetical Index]] | [[Category:Alphabetical Index]] | ||
[[Category:IALA Dictionary 1970-89 Edition]] | [[Category:IALA Dictionary 1970-89 Edition]] | ||
