kw.\*:("Echelle Mohs")
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Discussion on «an observation on Mhos' scale of hardners» by G. West (Quarterly Journal of Engineering Geology, London, 19-203-5) = Discussion sur «une observation de l'échelle de dureté de Mhos par G. West (Quarterly Journal of Engineering Geology, London, 19-203-5)GERRARD, A. J; WEST, G.Quarterly Journal of Engineering Geology. 1987, Vol 20, Num 1, issn 0481-2085, 99Article
