Howe, Malverd A. Retaining-walls for earth. Including the theory of earth-pressure as developed from the ellipse of stress - , 1907 - xii, 167 páginas : ; 20 cm. - . Subjects--Topical Terms: Matemáticas Subjects--Facted Index Terms: Dpto. de Humanidades Dewey Class. No.: 624.164 / H79