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A Shovel With a Perforated Blade Reduces Energy Expenditure Required for Digging Wet ClayHarivanam, Sridhar ; Marklin, Richard W. ; Papanek, Paula E. ; Cariapa, VikramHuman factors, 2010-08, Vol.52 (4), p.492-502 [Periódico revisado por pares]Los Angeles, CA: SAGE PublicationsTexto completo disponível |