Philips invention goes on sale Light bulb lasts 20 years. IN Business.
Published in: | Manila Bulletin Jan-Dec, Mon-Sat (2012). |
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Main Author: | |
Format: | Article |
Language: | English |
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Published in: | Manila Bulletin Jan-Dec, Mon-Sat (2012). |
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Main Author: | |
Format: | Article |
Language: | English |
Subjects: |