Supplement to American national standard safety code for elevators, dumbwaiters, escalators and moving walks.
| Corporate Authors: | , |
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| Format: | Book |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified],
1979.
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| Subjects: |
| Item Description: | Caption title. "ANSI A17.1a-1979; includes errata to ANSI A17.1-1978." "Issued on March 30, 1979 and is effective as of June 30, 1979." "Approved by the American National Standards Institute on Feb. 15, 1979." "Approved by the A17 Standards Committee." |
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| Physical Description: | 60 pages in various pagings ; 24 cm. |