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| SECTION A– HUMAN NECESSITIES |
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| SECTION B– PERFORMING OPERATIONS; TRANSPORTING |
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| SECTION C– CHEMISTRY; METALLURGY |
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| SECTION D– TEXTILES; PAPER |
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| SECTION E– FIXED CONSTRUCTIONS |
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| SECTION F– MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
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| SECTION G– PHYSICS |
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| SECTION H– ELECTRICITY |
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