Gears for instruments and clockwork mechanisms. Part 2: Cycloidal type gears
British standard 978: Part 2: 1952.
London : British standards institution, 1952.
12 págs. : ilus. ; 28 cm.
Biblioteca Central, UNS · Catálogo de libros | |||
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London : British standards institution, 1952.
12 págs. : ilus. ; 28 cm.