Portable ladders : data sheet 665

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<title>Portable ladders</title>
<subTitle>: data sheet 665</subTitle>
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<title>National safety news</title>
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<dateIssued encoding="marc">1977</dateIssued>
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<abstract displayLabel="Summary">This data sheet covers the selection, maintenance, and use of portable ladders used in service and manufacturing industries. No scaffolds or power-driven telescoping devices are discussed. This paper includes: selection of ladders: folding stepladders, combination or convertible ladders, straight and extension ladders, sectional ladders, trestle ladders, office and stockroom ladders, tubular metal ladders; hazards encountered when using ladders; using ladders; maintenance of ladders</abstract>
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<topic>Seguridad e higiene en el trabajo</topic>
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<topic>Accidentes de trabajo</topic>
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<topic>Prevención de accidentes</topic>
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<topic>Escaleras</topic>
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<topic>Escaleras móviles</topic>
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<title>National safety news</title>
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<publisher>Chicago</publisher>
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<text>Vol. 116, nº 1, July 1977 ; p. 79-85</text>
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