Frederick Philip Sandstrom & Herbert Robert Otto.
Otis maintenance reference book. Sections C.1.1.-C.2.1.-C.2.3.
R624341. Otis maintenance reference book. Sections C.1.1.-C.2.1.-C.2.3. By Frederick Philip Sandstrom & Herbert Robert Otto. © 12May48; AA84140. Otis Elevator Company (PWH); 20Jan76; R624341.
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